bar magnet - a magnet in the form of a bar with magnetic poles at each end

core - a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil

device - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"

electromagnet - a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet

field magnet - a magnet that provides a magnetic field in a dynamo or electric motor

magnetic needle - a slender magnet suspended in a magnetic compass on a mounting with little friction; used to indicate the direction of the earth's magnetic pole

paramagnet - magnet made of a substance whose magnetization is proportional to the strength of the magnetic field applied to it

permanent magnet, static magnet - a magnet that retains its magnetism after being removed from a magnetic field

magnetic pole, pole - one of the two ends of a magnet where the magnetism seems to be concentrated

solenoid - a coil of wire around an iron core; becomes a magnet when current passes through the coil

natural philosophy, physical science, physics - the science of matter and energy and their interactions

characteristic, feature - a prominent aspect of something; "the map showed roads and other features"; "generosity is one of his best characteristics"

attention - a general interest that leads people to want to know more; "She was the center of attention"