Nouns

(n)cycle, rhythm, roundan interval during which a recurring sequence of events occurs“the never-ending cycle of the seasons”
(n)cyclea series of poems or songs on the same theme“Schubert's song cycles”
(n)cyclea periodically repeated sequence of events“a cycle of reprisal and retaliation”
(n)hertz, Hz, cycle per second, cycles/second, cps, cyclethe unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)
(n)cycle, oscillationa single complete execution of a periodically repeated phenomenon“a year constitutes a cycle of the seasons”
(n)bicycle, bike, wheel, cyclea wheeled vehicle that has two wheels and is moved by foot pedals

Verbs

(v)cyclecause to go through a recurring sequence“cycle the laundry in this washing program”
(v)cyclepass through a cycle“This machine automatically cycles”
(v)motorbike, motorcycle, cycleride a motorcycle
(v)bicycle, cycle, bike, pedal, wheelride a bicycle
(v)cyclerecur in repeating sequences