Magnet (noun)

1. A piece of iron or other material that attracts certain metals, especially iron and steel, by the force of magnetism.
2. A piece of metal or other material that has been magnetized.
3. Something that attracts attention or interest.

Origin:

Late middle english: from latin magnetum "lodestone", from greek ho magnetes "the magnesian (stone)", from ho magnes, denoting an inhabitant of magnesia in asia minor, where the mineral was first discovered.

Examples:

1. The compass needle is a magnet that always points north.
2. This magnet is strong enough to hold up a pile of paperclips.
3. Magnet schools are public schools that attract students with a specific interest or talent.
4. The city is a magnet for tourists.
5. The movie was a magnet for award nominations.