n. [ Pref. bi- + cycle. ] A light vehicle having two wheels one behind the other. It has a saddle seat and is propelled by the rider's feet acting on cranks or levers. [ 1913 Webster ]
n. One who rides a bicycle. [ 1913 Webster ]
. A bicycle with equal or nearly equal wheels, usually about 28 inches diameter, driven by pedals connected to the rear (driving) wheel by a multiplying gear. Since the 1930's this has been the most common type of bicycle, now simply called