1. a line generated by a point on one figure rolling around a second figure • Syn: line roulette • Hypernyms: curve, curved shape • Hyponyms: cycloid, epicycloid, hypocycloid 2. a wheel with teeth for making a row of perforations • Syn: toothed wheel • Hypernyms: wheel 3. a gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in • Hypernyms: game of chance, gambling game