I. ˈbī-si-kəl, -ˌsi- also -ˌsī- noun
Etymology: French, from bi- + -cycle (as in tricycle )
Date: 1863
: a vehicle with two wheels tandem, handlebars for steering, a saddle seat, and pedals by which it is propelled ; also : a stationary exercise machine that resembles such a vehicle
II. intransitive verb
( bi·cy·cled ; bi·cy·cling -k(ə-)liŋ)
Date: 1869
: to ride a bicycle
• bi·cy·cler -klər noun
• bi·cy·clist -klist noun