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Definition of motor
a machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle or for some other device with moving parts. a source of power, energy, or motive force:hormones are the motor of the sexual functions
1giving, imparting, or producing motion or action:demand is the principle motor force governing economic activity Physiology relating to muscular movement or the nerves activating it:the motor functions of each hand 2
chiefly British driven by a motor.
of or relating to motor vehicles:a dominant figure in the world of motor sports
verb [no object] informal
travel in a motor vehicle, typically a car or a boat:we motored along a narrow road we motored out of Breton Bay to begin our return trip down the Potomac run or move as fast as possible:he had motored along to second base on a passed ball