n. & v.
1. a a recurrent round or period (of events, phenomena, etc.). b the time needed for one such round or period.
2 a Physics etc. a recurrent series of operations or states. b Electr. HERTZ.
3 a series of songs, poems, etc., usu. on a single theme.
4 a bicycle, tricycle, or similar machine.
1. ride a bicycle etc.
2 move in cycles.
Phrases and idioms:
cycle-track (or -way) a path or road for bicycles.
Etymology: ME f. OF, or f. LL cyclus f. Gk kuklos circle