n an interval during which a recurring sequence of events occurs
n a series of poems or songs on the same theme
n a periodically repeated sequence of events
n the unit of frequency; one hertz has a periodic interval of one second
n a single complete execution of a periodically repeated phenomenon
n a wheeled vehicle that has two wheels and is moved by foot pedals
v cause to go through a recurring sequence
v pass through a cycle
v ride a motorcycle
v ride a bicycle
v recur in repeating sequences