|Origin:||motus, past participle of movere; MOVE1|
the part of a machine that makes it work or move, by changing power, especially electrical power, into movement: ! Motor is not generally used to refer to the part of a vehicle which produces the power for it to move. Use engine: My car needs a completely new engine.
an electric motor
2 British English old-fashioned or informalTTC
That's a nice motor you've got, Dave.