n. 1 a the rotating coil or coils of a dynamo or electric motor. b any moving part of an electrical machine in which a voltage is induced by a magnetic field. 2 a piece of soft iron placed in contact with the poles of a horseshoe magnet to preserve its power. Also called KEEPER. 3 Biol. the protective covering of an animal or plant. 4 a metal framework on which a sculpture is moulded with clay or similar material. 5 archaic arms; armour.
[ F f. L armatura armour (as ARM(2), -URE) ]