Here are some important roulette key terms used in the game.

American Roulette Wheel: It is a version of roulette wheel having 38 pockets, with numbers 1 through 36 with a single zero "0" and a double zero "00" and with a house edge 5.4%.

Column: A bet on the 12 numbers in a column at the same time with payout 2:1

Corner: A bet on 4 numbers at once with payout 8:1

Dozen: A bet on 12 numbers on the wheel with payout 8:1

European Roulette Wheel: It is a version of roulette wheel having 37 pockets, with numbers 1 through 36 with a single zero "0" and house edge 2.7%.

Five-Number: A bet only possible on American roulette and is a combination of 0, 00, 1, 2, and 3, with a higher house edge and payout of 6:1.

House Edge: The advantage that every casino has on a particular game. In European roulette it is 2.70% and American roulette it is 5.26%.

Inside Bets: A bet on the individual number section of roulette layout such as a red/black, odd/even, dozens or columns bet.

Line: A bet that the ball will land on any one of six numbers in two horizontal rows or lines that pays 5:1

Low: A bet that the ball lands on a low number that pays 1:1

Martingale System: A famous roulette betting system in which a player doubles their bets after every loss but then drops back to the original bet when they win.

Outside Bets: Any bet that is not placed on any individual numbers or in the inside section of the layout.

Split: A bet that the ball lands on any one of two numbers you pick with payout 17 to 1.

Straight Up: A bet on any single number on the roulette layout (1 to 36) with payout 35:1

Street: A bet on any three numbers in a single horizontal row or line that pays 11:1

Zero: The green slot with the zero number that gives the house edge.