Definition of motor:
machine that converts other forms of energy into mechanical energy and so imparts motion
a nonspecific agent that imparts motion; "happiness is the aim of all men and the motor of all action"
travel or be transported in a vehicle; "We drove to the university every morning"; "They motored to London for the theater"
conveying information to the muscles from the CNS; "motor nerves"
causing or able to cause motion; "a motive force"; "motive power"; "motor energy"