motor
1. mo.tor \'mo-t-*r\ n [L, fr. motus, pp. of move-re to move] 1: one that imparts motion 2a: PRIME MOVER 2b: a small compact engine 2c: INTERNAL-COMBUSTION ENGINE; esp : a gasoline engine 3: MOTOR VEHICLE; esp : AUTOMOBILE 4: a rotating machine that transforms electrical energy into mechanical ene rgy 2. motor aj 1a: causing or imparting motion 1b: of, relating to, or being a nerve or nerve fiber that passes from the central nervous system or a ganglion to a muscle and conducts an impulse that causes movement 1c: of, relating to, or involving muscular movement 2a: equipped with or driven by a motor 2b: of, in, or relating to an automobile 2c: designed for motor vehicles or motorists 3. motor vi : to travel by automobile : DRIVE to transport by automobile
Webster's English Dictionary