Definition of bicycle noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈbaɪsɪkl//
; NAmE NAmE//ˈbaɪsɪkl//
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  (informal bike) a road vehicle with two wheels that you ride by pushing the pedals with your feet He got on his bicycle and rode off. We went for a bicycle ride on Sunday. See related entries: Cycling Word Originmid 19th cent.: from bi- ‘two’ + Greek kuklos ‘wheel’.Extra examples Did you come by bicycle? He mounted his bicycle and rode off. I dismounted and began to push my bicycle up the hill. She came off her bicycle when it skidded on some wet leaves. She pedalled her bicycle up the track. She tried to pedal her bicycle up the track. We watched the boys on their bicycles.
See the Oxford Advanced American Dictionary entry: bicycle