A bicycle is a vehicle with two wheels which you ride by sitting on it and pushing two pedals with your feet. You steer it by turning a bar that is connected to the front wheel.

Decorative bicycle, now a plant holder
Crushed cycle under wheels of lorry in central London
an old bicycle leaning against the wall in Florence, Italy
"Do what I say, not what I do"... spotted outside the Lock House Tea rooms, Trent Lock in Derbyshire.
Butcher's bike
Redhead with bicycle on lawn (1)
Redhead with bicycle on lawn
Bicycle in Market Place, Long Sutton, Spalding, Lincs.
Bicycle in town square, Varazdin, Croatia.
Victorian bicycle shop with Penny Farthing at back
Cycliing, Gap of Dunloe
Cyclists, The Burren
National Cycle Network monument, Belfast
Canary Wharf promo bikes
Bike outside clock repairer
Bikes on railings, Pimlico
Bikes with panniers
Mountain bike and graffiti
Rickshaw bike with sun hood
Sit up and beg bike
Bikes resting against a tree