American Roulette: A variant of roulette where an extra zero has been added to the roulette wheel.
Ball: Round object thrown into the spinning roulette wheel. When it lands on one of the numbers, it determines the rewards on that spin.
Black: A wager on all the black numbers.
Block Betting: A set of numbers on a section of the roulette wheel.
Carre: Meaning corner bet in French.
Combination bet: Bet on more than one number simultaneously.
Croupier: The person responsible for running the roulette table on behalf of the casino.
Double zero: A wager on the number 00.


En Prison Rule: A rule in some variants of roulette where you can surrender half your bet or allow the bet to be ‘imprisoned’ for another spin. If you choose the latter, your wager will be returned to you if you win.
European Roulette: Classic roulette game with only one zero. AKA French Roulette.
Even Bet: A wager on all the even numbers, which pays out 1:1.
Five Number Bet: Wager on the numbers 0, 00, 1, 2 and 3 simultaneously. Only possible in American Roulette and carries a house edge of 7.89%.
French Wheel: Another name for European roulette wheel.


Green numbers: The zero (and the double zero where applicable) on the roulette wheel.
House Percentage: The advantage which the house (casino) has over the player. Changes according to the roulette variant being played.
Inside bet: A wager placed on the numbers inside the layout.
Jeu Zero: French for ‘zero game’. A series of wagers on the numbers on either side of the zero.
Low Bet: A wager on the number being in the lower half (ie. 1 – 18).
Neighbors: The numbers which are adjacent (left or right) to the winning numbers.
Outside bet: A wager on anything except the numbers. These could be red, black, high, low, odd, even or column bets.
Parlay: Leaving your winnings from the previous wager on top of your current wager. Also known as Press.
Red: A wager on the red numbers on the roulette table, with odds that pay 1:1.


Run: A series of similar results.
Six Line Bet: A wager on two adjacent horizontal numbers on the roulette wheel, eg. 4, 5, 6, 7, 8, 9, with a payout rate of 5:1.
Slots: In Roulette, this refers to the sections on the wheel which hold the numbers.
Square Bet: A wager on a square of four numbers with a payout of 8:1. Also known as Quarter Bet.
Straight Up Bet: A wager on just one number on the roulette table.


Table Limit: The amount you can place on a specific bet.
Trio Bet: A combination bet on three numbers at the same time.
Wheel: The object around which the game of roulette is played. The wheel is numbered from 1 – 36 and a 0 (plus a 00 in the case of an American Roulette wheel). The ball spins around in the wheel until it falls into one of the slots.
Zero: One of the numbers on the roulette wheel. American roulette has a double zero (00) added to the wheel.