tail rotor
noun
a small propeller fitted to the rear of a helicopter to counteract the torque reaction of the main rotor and thus prevent the body of the helicopter from rotating in an opposite direction
Words nearby tail rotor
tail fold,
tail gate,
tail off,
tail out,
tail plane,
tail rotor,
tail skid,
tail wagging the dog, the,
tail wheel,
tail-heavy,
tail-light