Tricycle

n. three wheeled vehicle propelled by peddles (usually for children), velocipede; motorcycle with three wheels

v. ride a tricycle

A tricycle (often abbreviated to trike) is a three-wheeled vehicle. Tricycles generally follow one of three layouts:delta, with two wheels at the back and one at the front (the usual layout). One or both rear wheels can be driven, while the front is used for steering (the usual layout), or rear wheels can steer while the front wheel is driven, or any combination of both; and tadpole, with two steered wheels at the front and one driven wheel at the back. The front wheels can also be driven while the rear wheel steers, or all three wheels can be powered with the front wheels also performing the steering.iL3, an in line three wheeled vehicle, with two steered wheels: one at the front and the other in the middle or at the rear. When the mid wheel is steered, the wheel is turned by a mechanism in the same direction to the front wheel. When the rear wheel is steered, the wheel is turned by a mechanism in the opposite direction to the front wheel (countersteer).
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Noun
1. a vehicle with three wheels that is moved by foot pedals
(synonym) trike, velocipede
(hypernym) wheeled vehicle
(hyponym) pedicab, cycle rickshaw

n. tricycle, three wheeled vehicle propelled by peddles (usually for children); motorcycle with three wheels

(n.)
A three-wheeled velocipede. See Illust. under Velocipede. Cf. Bicycle.