Roulette Terminology 101

A roulette wheel with a ball in the center  Description automatically generated

Roulette is one of the most famous casino games of all time. Dating back to the 17th century, the game of chance has become a staple in both land-based and online casinos, with different variations available to play.

With this in mind, join us as we take a look at some of the key terms you’ll need to know before trying your chances at either land-based or online Roulette.

American Roulette

American Roulette is the most common variation of the game in North, Central and South America. This version came before the European version and features an extra green pocket for the double zero (00), giving it a higher house edge.


Bankroll is the term used to describe your allocated budget for the time you wish to try your chances. Remember to always play within your limits.

Block bet

A block bet is a bet covering a group of numbers on the wheel.

Column bet

A column bet is a bet on one of the three columns made up of 12 numbers on the table layout.

Combination bet

This is a bet on two or more numbers on the layout. 

Corner bet

A bet on four numbers in a section of the table layout – often a corner. This is also known as a ‘square bet’ or ‘quarter bet’.


A French word used to describe the dealer. 

Dozen bet

This is a bet on one of the three sequences of 12 numbers on the layout – 1 through 12, 13 through 24, or 25 through 36.

European Roulette

European Roulette is the most common variation of Roulette in Europe and Asia. With a lower house edge than American Roulette, the wheel features just one green single-zero (0) pocket. 

Even bet/odd bet

An even bet is a wager on the ball landing in a pocket that corresponds with an even number, and an odd bet is the same, but with the odd numbers on the wheel.

Even money bet

An even money bet is also known as an outside bet. It covers half the table and could be an even/odd bet or red/black bet.

French Roulette

French Roulette is a variation of European Roulette offering other rules such as ‘La Partage’ or ‘En Prison’.

High bet/low bet

A high bet is a wager on one of the high numbers (19-36). A low bet is the same but with the low numbers.

House edge

The house edge refers to the mathematical advantage the casino or ‘house’ has on each bet. This is often shown as a percentage.

Inside bet/outside bet

Inside bets refer to a bet on any of the numbers in the table layout. An outside bet is also known as an even money bet (see above).

Line bet

A line bet is a wager that one of six numbers will be involved in the outcome of the spin. This will be displayed as two rows of three numbers separated by a line on the layout. Also known as a six-number bet.

Marker or dolly

This is the object that gets placed on the winning number. Its removal often indicates a new game.


Pockets are the small segments on the wheel in which the ball will eventually land, corresponding with a number. Half are red, half are black, and the single and double zero slots are green.

Split bet

A split bet is a single bet that one of two numbers will be successful. 

Straight up bet

This refers to a bet on a single number. Known as ‘En Plein’ in French Roulette.

Street bet

Also known as a triple bet, this is a bet on a row of three numbers on the table layout.


Wager is another term for bet.


This references the green space marked ‘0’ on the Roulette wheels. As mentioned, American Roulette wheels also feature a double zero (00) pocket.

Sophia Anderson

Sophia Anderson is a blogger and a freelance writer. She is passionate about covering topics on money, business, careers, self-improvement, motivation and others. She believes in the driving force of positive attitude and constant development.