A bicycle having a motor attached so as to
be self-propelled. In Great Britain the term motor cycle is
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.