Roulette Terms Explained: Complete Glossary for Live Players at Flush
Roulette Terms Explained: Complete Glossary for Live Players at Flush
Roulette is one of the oldest casino table games still played in essentially the same form as when it was developed in 18th-century France. The language around the game carries that history: terms like voisins du zéro, en prison, and tiers du cylindre are French phrases that have survived intact into modern live casino play. At Flush, where live roulette is available across more than a dozen variants from Evolution and Pragmatic Play Live, understanding the full vocabulary of roulette makes you a better-prepared player before you sit at any table.
This glossary covers more than 40 roulette terms, organised by category: inside bets, outside bets, call bets (announced bets), special rules, wheel and table anatomy terms, and game show terms specific to Lightning Roulette and similar Flush live roulette variants. Each term includes a practical explanation with a concrete example so that the definition connects directly to how you would use it at a live table at Flush.
Whether you are playing with a live session credit at Flush to get familiar with the interface, or sitting at a real-money Lightning Roulette table with ETH, USDT, BTC, TRX, or, knowing these terms before you play is time well spent. The live dealers at Evolution and Pragmatic Play Live studios call bets using standard roulette terminology, and the Flush bet interface uses the same terms in its chip placement layout.
Inside Bets
Inside bets are placed on specific numbers or small groups of numbers on the numbered section of the roulette table layout. They carry higher risk than outside bets because they cover fewer numbers, but they pay at higher odds when they win.
Straight-Up Bet
A straight-up bet covers a single number. Chips are placed directly on that number in the table layout. On a European single-zero wheel with 37 pockets, a straight-up bet wins on one pocket out of 37, giving a probability of approximately 2.7%. The standard pay is 35:1, meaning a $10 straight-up bet returns $360 total ($350 profit plus $10 stake) on a win. In Lightning Roulette at Flush, straight-up bets on non-Lucky Numbers pay at the reduced rate of 29:1. Straight-up bets on Lucky Numbers pay at the assigned multiplier (50x to 500x) if that number is hit.
Split Bet
A split bet covers two adjacent numbers on the table layout. Chips are placed on the line between two neighbouring numbers. Example: a split covering 4 and 7, or 14 and 15. The split bet wins if the ball lands on either of the two covered numbers. On a European wheel, this is a 2-in-37 probability of approximately 5.4%. The standard pay is 17:1.
Street Bet
A street bet (also called a row bet) covers three numbers in a horizontal row on the table layout. Each row on a standard roulette table runs across three consecutive numbers: 1-2-3, 4-5-6, 7-8-9, and so on up to 34-35-36. Chips are placed on the outside edge of the row to indicate which street is covered. The probability of winning a street bet on a European wheel is 3/37, approximately 8.1%. The standard pay is 11:1.
Corner Bet
A corner bet (also called a square bet or four-number bet) covers four numbers that share a corner on the table layout. Chips are placed on the point where four numbers meet. Example: a corner covering 1, 2, 4, and 5. The probability of a corner bet winning on a European wheel is 4/37, approximately 10.8%. The standard pay is 8:1.
Line Bet
A line bet (also called a six-line bet or double street) covers two adjacent streets, meaning six consecutive numbers arranged in two rows of three. Example: a line bet covering 1-2-3 and 4-5-6 for a total cover of six numbers. Chips are placed at the outside edge between the two covered rows. The probability on a European wheel is 6/37, approximately 16.2%. The standard pay is 5:1.
Trio Bet
A trio bet is a three-number bet specific to the arrangement of 0, 1, 2 or 0, 2, 3 at the top of the roulette table layout, where the zero meets the first row of numbers. Unlike a street bet, which covers a standard numbered row, the trio bet must include the zero. On a European wheel, a trio bet pays 11:1. It is less common than the standard street bet and is rarely placed except by players who specifically want zero coverage alongside adjacent low numbers.
Five-Number Bet
The five-number bet is specific to American double-zero roulette and covers 0, 00, 1, 2, and 3. It carries the worst house edge of any roulette bet (7.89% on American wheels) and is not available on European single-zero tables at Flush. Flush’s live roulette tables are primarily European or Lightning variants, so this bet does not appear at Flush. It is worth knowing only to understand why American roulette is less favourable than European roulette.
Outside Bets
Outside bets are placed on the outer sections of the roulette table layout and cover large groups of numbers. They win more frequently than inside bets but pay at lower odds. On a European wheel, the single zero means that none of the even-money outside bets cover exactly half the wheel: red and black, for example, each cover 18 of 37 pockets rather than 18 of 36.
Red/Black
The red/black bet covers all 18 red pockets or all 18 black pockets on the wheel. Zero is neither red nor black, which is why the house has an edge on this even-money bet. On a European single-zero wheel, red or black wins on 18 of 37 spins, a probability of 48.65%. The pay is 1:1. At Flush Lightning Roulette, red/black bets pay at 1:1 and are not affected by the Lucky Number multiplier mechanic.
Odd/Even
The odd/even bet covers all 18 odd numbers (1, 3, 5, up to 35) or all 18 even numbers (2, 4, 6, up to 36). Zero is neither odd nor even. The probability and pay are identical to red/black: 18/37, approximately 48.65%, paying 1:1. On a standard Flush live roulette table, this is the most straightforward outside bet for players who want near-even-money returns.
Dozen Bet
A dozen bet covers one of three groups of 12 consecutive numbers: the first dozen (1-12), the second dozen (13-24), or the third dozen (25-36). Zero is not covered by any dozen. The probability of a dozen bet winning on a European wheel is 12/37, approximately 32.4%. The pay is 2:1. Example: a $10 bet on the first dozen returns $30 total ($20 profit plus $10 stake) when any number from 1 to 12 lands.
Column Bet
A column bet covers one of three vertical columns of 12 numbers running the length of the table layout. Each column contains 12 numbers but they are not consecutive in the way a dozen is: for example, the first column contains 1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, and 34. Zero is not in any column. The probability and pay are identical to the dozen bet: 12/37 and 2:1.
High/Low
The high/low bet covers either the high numbers (19-36) or the low numbers (1-18). Zero is neither high nor low. Probability is 18/37, approximately 48.65%, paying 1:1. This bet functions identically to red/black and odd/even in terms of probability and payout structure.
Call Bets (Announced Bets)
Call bets (also called announced bets) are bets based on sections of the physical roulette wheel rather than sections of the flat table layout. They are named using French roulette terminology and are standard in European roulette. At Flush, Evolution live roulette tables include a race track interface for placing call bets, displayed as an oval diagram representing the wheel sequence.
Voisins du Zéro
Voisins du zéro translates as “neighbours of zero.” This call bet covers a 17-number section of the European roulette wheel centred on zero: the numbers 22, 18, 29, 7, 28, 12, 35, 3, 26, 0, 32, 15, 19, 4, 21, 2, and 25. The bet requires 9 chips placed as follows: 2 chips on the 0-2-3 trio, 1 chip each on the 4/7 split, 12/15 split, 18/21 split, 19/22 split, and 32/35 split, and 2 chips on the 25/26/28/29 corner. If any of the 17 covered numbers lands, the bet wins at the applicable split, trio, or corner pay. Voisins du zéro is the most commonly placed call bet because it covers the largest wheel segment.
Tiers du Cylindre
Tiers du cylindre translates as “thirds of the wheel.” This call bet covers a 12-number section of the wheel on the opposite side from the voisins section: the numbers 27, 13, 36, 11, 30, 8, 23, 10, 5, 24, 16, and 33. The bet requires 6 chips placed as 6 individual split bets: 5/8, 10/11, 13/16, 23/24, 27/30, and 33/36. Tiers covers approximately one-third of the wheel and is popular among players who prefer balanced wheel coverage to the zero-section focus of voisins.
Orphelins
Orphelins translates as “orphans.” This call bet covers the 8 numbers not included in either voisins du zéro or tiers du cylindre: 1, 6, 9, 14, 17, 20, 31, and 34. The orphelins section occupies two separate wheel segments, which is why these numbers are called orphans: they don’t belong to either of the two main wheel sections. The bet requires 5 chips: 1 chip straight-up on 1, and 1 chip on each of the splits 6/9, 14/17, 17/20, and 31/34. Note that 17 is covered by two of the splits, meaning an 18:1 pay on 17 returns double.
Neighbours Bet
A neighbours bet (also called numero and les voisins in casual use, though technically different from voisins du zéro) covers a specific number and its two immediate neighbours on either side of the wheel, for a total of five numbers. Example: a neighbours bet on number 7 covers 7, 18, 29 (to the left of 7 on the wheel) and 28, 12 (to the right), placing one chip straight-up on each of the five numbers. The Flush roulette race track interface lets players select any number and expand to cover 1, 2, or 3 neighbours on each side. This is a flexible call bet for players who want to focus on a specific wheel section.
Jeu Zéro
Jeu zéro (zero game) is a smaller call bet covering 7 numbers closest to zero on the wheel: 12, 35, 3, 26, 0, 32, and 15. It requires 4 chips: 1 straight-up on 26, and 3 splits on 0/3, 12/15, and 32/35. Jeu zéro is a subset of the voisins du zéro section and is used by players who want zero-area coverage with fewer chips than the full voisins bet requires.
Special Rules
En Prison
En prison is a special rule in European roulette that applies to even-money outside bets (red/black, odd/even, high/low) when zero lands. Instead of losing the entire bet when zero hits, the bet is “imprisoned” and left on the table for the next spin. If the next spin produces a result that would have won the original bet, the stake is returned (no profit). If the next spin produces a losing result or another zero, the bet is lost. The en prison rule reduces the house edge on even-money bets from 2.70% to 1.35% on a European single-zero wheel. Not all live roulette variants at Flush offer en prison: check the game rules panel on each table.
La Partage
La partage (meaning “the sharing”) is an alternative to en prison that also applies to even-money outside bets when zero lands. Under la partage, when zero hits, half of the even-money bet is returned immediately and the other half is surrendered to the house. There is no option to leave the bet imprisoned for the next spin. La partage produces the same mathematical effect as en prison: the house edge on even-money bets drops from 2.70% to 1.35%. La partage is common in French roulette variants. At Flush, Lightning Roulette uses neither en prison nor la partage.
Wheel and Table Anatomy Terms
Single-Zero Wheel
A single-zero roulette wheel has 37 pockets: numbers 1 through 36 plus one zero (0). The single-zero format is the European standard and produces a 2.70% house edge on most bets. Flush’s primary live roulette variants, including Lightning Roulette, Speed Roulette, and Immersive Roulette, all use single-zero European wheels. The single-zero format is superior to the double-zero American wheel for players, because the extra zero in the American format raises the house edge to 5.26%.
Double-Zero Wheel
A double-zero roulette wheel has 38 pockets: numbers 1 through 36 plus zero (0) and double-zero (00). The double-zero format is the American standard. The extra zero pocket raises the house edge to 5.26% on straight-up bets and most other bets. Flush does not prominently feature American double-zero roulette in its live casino suite, consistent with its focus on European variants with lower house edge.
A pocket is a single numbered compartment on the roulette wheel where the ball can land. On a European wheel, there are 37 pockets: 36 numbered pockets alternating in red and black, plus one green zero pocket. The size, material, and angle of pockets vary slightly between wheel manufacturers, but the fundamental structure is the same across all standard casino roulette wheels, including those used in Evolution’s live studios at Flush.
Fret
Frets are the metal dividers between pockets on the roulette wheel. They determine pocket size and shape. On a standard roulette wheel, frets are fixed and relatively uniform. Worn or loose frets can create what some players call a “biased wheel,” where the ball lands in certain pockets more frequently than random chance would predict. In live casino streams at Flush, Evolution’s studio wheels are maintained to manufacturer standards, making pocket bias negligible as a practical concern.
Ball Track
The ball track (also called the canoe ball track or apron) is the outer ring of the roulette wheel where the ball travels when spun by the dealer. The ball circles the track at speed and gradually loses momentum, crossing the deflectors (diamond-shaped metal obstacles on the inner wall) before dropping into the pocket area and landing in a numbered pocket. The randomness of where the ball crosses the deflectors and how it bounces in the pocket area is the fundamental physical randomness that makes roulette outcomes unpredictable.
Backtrack
The backtrack is the stationary outer rim of the roulette wheel, outside the rotating bowl. The ball is launched along the backtrack and moves inward once it slows down. At Flush’s live roulette tables, the camera angle shows the full wheel including the backtrack, allowing players to observe the ball’s full trajectory.
Chip
In roulette, each player typically uses a unique chip colour to distinguish their bets from those of other players at the same table. In live dealer roulette at Flush, the chip denomination is selected by the player from the available chip values before betting. Standard chip values at Flush live roulette range from the minimum bet unit up to the table maximum per chip. Unlike in physical casinos, chips at Flush live tables are virtual, with denomination values shown numerically on the chip graphic.
Croupier
The croupier is the dealer who operates the roulette table. At Flush’s Evolution live roulette tables, the croupier spins the wheel, announces “no more bets” when the ball enters the pocket area, announces the result, and manages payouts. The croupier in a live casino stream is a trained casino employee in a physical studio. They cannot influence where the ball lands after the spin is initiated.
No More Bets
“No more bets” is the croupier’s announcement that the betting window is closed. At Flush live roulette tables, a visual countdown timer also indicates when the betting window closes. After the croupier announces no more bets, no additional chips can be placed. Any chips placed after this announcement are either declined by the system or are invalid. At Flush, the betting interface automatically locks when the window closes.
Game Show Terms (Lightning Roulette and Variants)
Lucky Number
A Lucky Number is a specific number selected by the RNG before each spin in Lightning Roulette at Flush. Between one and five Lucky Numbers are selected per round. If a Lucky Number is hit and a player has a straight-up bet on that number, the bet pays at the assigned multiplier (50x to 500x) rather than the standard pay. Lucky Numbers are displayed on screen during the pre-spin phase and are visible to all players before the betting window closes.
Multiplier
In the context of Lightning Roulette at Flush, a multiplier is the pay rate assigned to a Lucky Number. The available multipliers in Lightning Roulette are 50x, 100x, 200x, 300x, 400x, and 500x. These multipliers replace the standard 35:1 pay on a straight-up bet when a Lucky Number is both selected and hit. The word multiplier is used in several other live game show contexts at Flush: Crazy Time features a multiplier applied across the Coin Flip, Cash Hunt, Pachinko, and Crazy Time bonus round segments. Funky Time uses multipliers in its bonus rounds. In all cases, a multiplier indicates that the base pay is being scaled up by the stated factor.
RNG
RNG stands for random number generator. In Lightning Roulette at Flush, the RNG is the software system that selects Lucky Numbers and assigns their multipliers before each spin. The physical wheel and ball produce the final number result, but the Lucky Number selection is a software RNG process that runs independently of the physical spin. Evolution’s RNG for Lightning Roulette is independently certified by eCOGRA, which tests and certifies that the RNG produces genuinely random outputs and is not manipulable. The combination of certified RNG for Lucky Numbers and physical randomness for the wheel outcome is the dual-randomness structure of Lightning Roulette.
Probability and Roulette: What Terms Don’t Tell You
One of the most important concepts for roulette players at Flush is what all these terms don’t tell you: roulette is a game of independent spins. No term in this glossary, no bet type, no call bet, and no special rule changes the fundamental statistical reality that each spin of the wheel is independent of all previous spins.
The hot/cold number display shown on many Flush live roulette interfaces lists numbers that have appeared frequently or infrequently in recent rounds. These displays are informational, not predictive. A number that has not appeared in 100 consecutive spins is not “due.” Its probability on the next spin is still 1/37 on a European wheel, the same as any other number. The law of large numbers tells us that over a very large number of spins, all numbers tend toward equal frequency, but this is a long-run property of large samples, not a short-run guarantee.
Understanding this is more useful than knowing any call bet or special rule. All the vocabulary in this glossary makes you a more fluent player at Flush’s live roulette tables. None of it changes the 2.70% house edge on a European wheel or produces a mathematical edge over the house.
Quick Reference: Pay Rates Summary
For quick reference at Flush live roulette tables, here are the standard pay rates for each bet type on a European single-zero wheel:
Straight-up: 35:1 (29:1 in Lightning Roulette for non-Lucky numbers). Split: 17:1. Street: 11:1. Corner: 8:1. Line: 5:1. Dozen: 2:1. Column: 2:1. Red/Black: 1:1. Odd/Even: 1:1. High/Low: 1:1.
These pay rates apply at all Evolution and Pragmatic Play Live roulette tables accessible at Flush. The only variant with different standard pay rates is Lightning Roulette, which reduces the straight-up pay on non-Lucky numbers to 29:1 to fund the multiplier pool.
live session for Roulette at Flush
Before placing real bets, Flush provides a live session mode for many roulette formats in its live casino section. The live session allows you to use the bet interface, practice placing inside and outside bets, and observe the Lucky Number reveal process in Lightning Roulette, all without depositing BTC, ETH, USDT, TRX. For players learning call bets for the first time, the live session race track interface is a no-risk way to practise voisins, tiers, and orphelins bet placement before using real funds.
More at Flush
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FAQ
Can I try live casino games for free before playing for real money?
Most live dealer games at Flush do not offer a free demo mode since they stream from real studios with live hosts. However, Flush lets you watch live tables without placing bets so you can observe the game flow, bet timing, and bonus mechanics before committing funds. This watch mode is available on all Evolution tables in the Flush live casino lobby.
What house edge should I expect on live casino games at Flush?
House edge varies significantly by game type at Flush. Live baccarat (Banker bet) runs at approximately 1.06%. European roulette carries a 2.70% house edge. Live blackjack with basic strategy reduces the house edge to under 0.5%. Game shows like Crazy Time average around 3.92% across all bet types. Checking the specific RTP of each game before your session is the best approach.
Can I play Roulette Terms Explained with Bitcoin or other crypto at Flush?
Yes. Flush accepts BTC, ETH, BNB, LTC, USDT, USDC, TRX, POL, and DOGE for all live casino tables including Roulette Terms Explained. Crypto deposits at Flush carry no platform fees. TRX and POL typically confirm fastest for players who want to fund and play immediately. BTC and ETH are the most commonly used for larger session budgets. All live casino rakeback at Flush releases every 30 minutes regardless of which crypto you use.
What is the best bet in Roulette Terms Explained for minimising house edge?
Outside bets, Red/Black, Odd/Even, Dozen, and Column, carry the lowest house edge in Roulette Terms Explained at the full European roulette rate. Straight-up single number bets offer higher variance and potential multiplier payouts in Lightning variants, but at a marginally lower RTP than outside bets. Players focused on session longevity should prioritise outside bets and use single-number positions for supplementary multiplier exposure only.
Does playing Roulette Terms Explained at Flush count toward VIP rakeback?
Yes. All real-money wagering on Roulette Terms Explained at Flush contributes to the rakeback system. Rakeback releases automatically every 30 minutes to your Flush account balance regardless of whether you’re winning or losing that session. The rakeback rate increases across Flush’s 10 VIP tiers, Iron, Bronze, Silver, Gold, Platinum, Diamond, Ruby, Emerald, Sapphire, and Vibranium. Higher-volume Roulette Terms Explained players at Flush progress through tiers faster and receive higher per-round rakeback rates that meaningfully reduce the effective house edge over time.
About the Author
Anastasia Nowak is a live casino specialist and senior editor at Flush with six years covering Evolution Gaming, Pragmatic Play Live, and Microgaming live dealer products. Her analysis focuses on RTP mechanics, house edge breakdowns, and practical session management for crypto casino players. She holds no financial relationships with any casino operator or software provider.