armature

[ˈɑːmətjʊə]
n
a revolving structure in an electric motor or generator, wound with the coils that carry the current
any part of an electric machine or device that moves under the influence of a magnetic field or within which an electromotive force is induced
Also called: keeper a soft iron or steel bar placed across the poles of a permanent magnet to close the magnetic circuit
such a bar placed across the poles of an electromagnet to transmit mechanical force
a framework to support the clay or other material used in modelling
the protective outer covering of an animal or plant
armour