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English definition of “hook”

hook

noun     /hʊk/
B2 [C] a curved piece of metal or plastic used for hanging something on, or a similar object used for catching fish: His coat was hanging from a hook on the door.Pins, clips, hooks and pegs
off the hook If a telephone is off the hook, the part you speak into is not in its correct position, so the telephone will not ring.Communicating by telephone
a left/right hook a hard hit with your left/right handFighting sportsHitting and beatingPunishing by causing pain
(Definition of hook noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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