Bicycle Definition

bīsĭkəl, -sĭ-kəl, -sīkəl

bicycled, bicycles, bicycling

noun

bicycles

A vehicle consisting of a light frame mounted on two wire-spoked wheels one behind the other and having a seat, handlebars for steering, brakes, and two pedals or a small motor by which it is driven.

American Heritage

A vehicle consisting of a tubular metal frame mounted on two large, wire-spoked wheels, one behind the other, and equipped with handlebars, a saddlelike seat, and foot pedals.

Webster's New World

An exercise bicycle.

American Heritage

A vehicle that has two wheels, one behind the other, a steering handle, and a saddle seat or seats and is usually propelled by the action of a rider’s feet upon pedals.

Wiktionary

A traveling block used on a cable in skidding logs.

Wiktionary

Synonyms:

Synonyms:
motocycle
tricycle
pedicab
wheel
cycle
bike
road-bike
racing
mountain
two-wheeler
ten-speed
tandem
mountain-bike
Exercycle (trademark)
three-speed

verb

bicycled, bicycles, bicycling

To ride or travel on a bicycle.

Webster's New World

To carry on or as on a bicycle.

Webster's New World

To travel over on a bicycle.

Webster's New World

To travel or exercise using a bicycle.

Wiktionary

Synonyms:

Synonyms:
wheel
pedal
bike
cycle

Other Word Forms of Bicycle

Noun

Singular:

bicycle

Plural:

bicycles

Origin of Bicycle

From bi- (“two”) +‎ Ancient Greek κύκλος (kuklos, “circle, wheel”), on the pattern of tricycle. First attested in English in 1868, from French bicyclette (1847). Superseded earlier velocipede.

From Wiktionary
Probably bi– -cycle (on the model of tricycle three-wheeled coach)

From American Heritage Dictionary of the English Language, 5th Edition