lodestone

noun

A piece of magnetite that has magnetic properties and attracts iron or steel.

noun

One that attracts strongly.

noun

A variety of magnetite, or the magnetic oxid of iron, which possesses polarity and has the power of attracting fragments of iron. See magnet.

noun

A leading-stone for drains.

noun

Same as loadstone.

noun

A naturally occurring magnet.

noun

The mineral magnetite.

noun

a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically