Английский разговорный словарь (основной) - roulette

ru:ˈlet n. 1 a gambling game using a table in which a ball is dropped on to a revolving wheel with numbered compartments, players betting on the number at which the ball comes to rest. 2 Math. a curve generated by a point on a curve rolling on another. 3 a a revolving toothed wheel used in engraving. b a similar wheel for making perforations between postage stamps in a sheet. øørouletted adj. (in sense 3b). [F, dimin. of rouelle f. LL rotella dimin. of L rota wheel]