An interval of time during which a characteristic, often regularly repeated event or sequence of events occurs, A bicycle, motorcycle, or similar vehicle, a period of about 6,586 days, the time of revolution of the moon's node; -- called Saros by the Chaldeans, intransitive verb_ To ride a bicycle, tricycle, or other form of cycle, To pass through a cycle{2} of changes; to recur in cycles, To move in or as if in a cycle