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English definition of “knock”

knock

verb
 
 
/nɒk/
MAKE NOISE [I] B1 to make a noise by hitting something, especially a door, with your closed hand in order to attract someone's attention: There's someone knocking at/on the door. Please knock before entering.Hitting against objects accidentally and collidingSounds made by objects, movement or impact
HIT [T] B1 to hit something or someone and make them move or fall down: He accidentally knocked the vase off the table. I knocked over the mug. He was knocked unconscious by the blast.Hitting against objects accidentally and collidingHitting and beatingPunishing by causing pain
CRITICIZE [T] informal to criticize someone or something, often unfairly: She knocks every suggestion I make.Disapproving and criticizingDamaging reputation
→ See also beat/knock the (living) daylights out of sb, Knock it off!, knock sth back, knock sb down, knock sb/sth down, knock sth down, knock off, knock sth off (sth), knock sb out
(Definition of knock verb from the Cambridge Learners Dictionary © Cambridge University Press)
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