Roulette

Noun

 * 1)  A game of chance, in which a small ball is made to move round rapidly on a circle divided off into numbered red and black spaces, the one on which it stops indicating the result of a variety of wagers permitted by the game.
 * 2)  A small toothed wheel used by engravers to roll over a plate in order to produce rows of dots.
 * 3)  A similar wheel used to roughen the surface of a plate, as in making alterations in a mezzotint.
 * 4)   The locus of a point on a plane curve that rolls without slipping along another fixed plane curve.
 * 5) (stamp-collecting) any of the small incisions on a sheet of stamps, used as an alternative to perforations.

Derived terms

 * Delaunay roulette
 * roulette wheel
 * Russian roulette
 * Sturm roulette
 * Vatican roulette

Thesaurus
bingo, card games, chuck and toss, chuck farthing, chuck-a-luck, crack-loo, crap game, crap shooting, craps, fan-tan, hazard, horse racing, keno, lotto, pinball, pitch and toss, policy, rouge et noir, shell game, sweepstake, sweepstakes, the numbers, the numbers game, trente-et-quarante