Bicycle (noun)

1. A vehicle that consists of two wheels, a frame, and pedals for propulsion, and is ridden by sitting on a seat and steering with handlebars.
2. A vehicle propelled by the action of pedals and usually having two wheels, one behind the other.

Origin:

From the french word "bicyclette" meaning "two-wheeled horse-less vehicle".

Examples:

1. He rode his bicycle to work.
2. She learned how to ride a bicycle when she was a child.
3. Bicycles are a popular form of transportation.
4. The bicycle has a chain that connects the pedals to the rear wheel.
5. A bicycle is a vehicle that consists of two wheels, a frame, and pedals for propulsion, and is ridden by sitting on a seat and steering with handlebars.