armature - coil in which voltage is induced by motion through a magnetic field

electric motor - a motor that converts electricity to mechanical work

generator - engine that converts mechanical energy into electrical energy by electromagnetic induction

turbine - rotary engine in which the kinetic energy of a moving fluid is converted into mechanical energy by causing a bladed rotor to rotate

bar - a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon; "there were bars in the windows to prevent escape"

electrical distributor, distributer, distributor - electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence

eggbeater, helicopter, whirlybird, chopper - an aircraft without wings that obtains its lift from the rotation of overhead blades

impeller - the blade of a rotor (as in the compressor of a jet engine)

jet engine - a gas turbine produces a stream of hot gas that propels a jet plane by reaction propulsion

main rotor - rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air

rotating mechanism - a mechanism that rotates

anti-torque rotor, tail rotor - rotor consisting of a rotating airfoil on the tail of a single-rotor helicopter; keeps the helicopter from spinning in the direction opposite to the rotation of the main rotor