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The Collaborative International Dictionary of English v.0.48 (gcide)

motorcycle \mo"tor*cy`cle\, or motor cycle \mo"tor cy`cle\, n.
A two-wheeled vehicle having a motor attached so as to be
self-propelled. In common usage, a motorcycle is of heavier
construction with larger wheels, a more powerful motor, and a
higher maximum speed than a {motorbike}.

Note: A motorcycle may have a small appended compartment
called a sidecar, supported by a third wheel, which can
carry a passenger.
[Webster 1913 Suppl.]

Note: In Great Britain as of 1913 the term motor cycle was
treated by statute (--3 Ed VII. c. 36) as limited to
motor cars (self-propelled vehicles) designed to travel
on not more than three wheels, and weighing unladen
(that is, without water, fuel, or accumulators
necessary for propulsion) not more than three hundred
weight (336 lbs.).
[Webster 1913 Suppl.]


motorcycle \motorcycle\ v. i.
to ride a motorcycle.

Syn: cycle.
[WordNet 1.5]