A piece of iron or other material that has its component atoms so ordered that the material exhibits properties of magnetism, such as attracting other iron-containing objects or aligning itself in an external magnetic field.

The magnet on the refrigerator holds up the shopping list.

A person or thing that has a powerful attraction.

The new amusement park is a magnet for tourists.

magnetadjective

Serving or designed to attract a particular group or element; having an attracting quality (used only before a noun).

The city invested in magnet programs to draw talented students.