magnet

/ˈmæg·nət/ n [C] physics

Definition

› an object, esp. a piece of iron, that is able to attract iron and steel objects toward itself: Magnets are used to attach the toy train’s cars to the engine. We use a refrigerator magnet (= small decorative magnet that will stick to a steel door) to hang our kids’ latest drawings. fig. New York City remains a magnet for tourists (= it attracts them).

(Definition of magnet n from the Cambridge Academic Content Dictionary © Cambridge University Press)