posterior part of the back of a domestic fowl | a wheeled vehicle that has two wheels and is moved by foot pedals |
a seat for the rider of a horse or other animal | a single complete execution of a periodically repeated phenomenon |
a seat for the rider of a bicycle | a periodically repeated sequence of events |
a piece of leather across the instep of a shoe | a series of poems or songs on the same theme |
cut of meat (especially mutton or lamb) consisting of part of the backbone and both loins | an interval during which a recurring sequence of events occurs |
a pass or ridge that slopes gently between two peaks (is shaped like a saddle) | the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) |