magnet

n. object which has the property of attracting iron or steel; electromagnet; person or thing which attracts

A magnet is a material or object that produces a magnetic field. A "hard" or "permanent" magnet is one which stays magnetized for a long time, such as magnets often used in refrigerator doors. Permanent magnets occur naturally in some rocks, particularly lodestone, but are now more commonly manufactured. A "soft" or "impermanent" magnet is one which loses its memory of previous magnetizations. "Soft" magnetic materials are often used in electromagnets to enhance (often hundreds or thousands of times) the magnetic field of a wire that carries an electrical current and is wrapped around the magnet; the field of the "soft" magnet increases with the current.
See more at Wikipedia.org...

Magnet /mag·net/ an object having polarity and capable of attracting iron.magnet´ic magnet an object having polarity and capable of attracting iron. [more]Magnet - Community and Resources

Noun
1. (physics) a device that attracts iron and produces a magnetic field
(hypernym) device
(hyponym) bar magnet
(part-meronym) core
(derivation) magnetize, mesmerize, mesmerise, magnetise, bewitch, spellbind
(classification) physics, physical science, natural philosophy
2. a characteristic that provides pleasure and attracts; "flowers are an attractor for bees"
(synonym) attraction, attractor, attracter, attractive feature
(hypernym) feature, characteristic
(hyponym) attention

n. magnet, loadstone, stone that has magnetic properties; object with magnetic attractive properties