Motor

·noun ·Alt. of Motorial.

II. Motor ·add. ·noun A motor car; an Automobile.

III. Motor ·noun One who, or that which, imparts motion; a source of mechanical power.

IV. Motor ·noun A prime mover; a machine by means of which a source of power, as steam, moving water, electricity, ·etc., is made available for doing mechanical work.