bicycle
noun
[ ˈbʌɪsɪk(ə)l ]
• a vehicle consisting of two wheels held in a frame one behind the other, propelled by pedals and steered with handlebars attached to the front wheel.
bicycle
verb
• ride a bicycle.
• "they spent the holidays bicycling around the beautiful Devonshire countryside"
Origin:
mid 19th century: from bi- ‘two’ + Greek kuklos ‘wheel’.