roulette

uncountable

A noun referring to a gambling game where players bet on the outcome of a spinning wheel, or a tool or geometric concept involving a rolling or rotating motion.

• 🇷🇺Существительное, обозначающее азартную игру, в которой игроки делают ставки на результат вращения колеса, или инструмент или геометрическое понятие, связанное с качением или вращательным движением.

1. Gambling game B1 formal

   A gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in.

   • He lost all his money playing roulette at the casino.
   • Roulette is a game of pure chance.
   • She placed a bet on red in the roulette game.

   🇷🇺Рулетка

2. Perforating wheel C1 formal

   A wheel with teeth used for making a row of perforations, for example in paper or stamps.

   • The printer uses a roulette to create perforations in the paper.
   • Stamp collectors use a roulette to separate sheets.
   • The machine's roulette wheel made precise holes.

   🇷🇺Перфорационное колесико

3. Mathematical curve C2 formal technical

   A line generated by a point on one figure rolling around a second figure.

   • The cycloid is a type of roulette curve.
   • Mathematicians study roulettes in geometry.
   • The path traced by a point on a rolling circle is a roulette.

   🇷🇺Рулетта

• roulettes plural form
• roulettes' possessive plural form
• roulette's possessive singular form