Meaning of “knock” - Learner’s Dictionary


verb us uk /nɒk/

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.

More examples

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.
CRITICIZE [ T ] informal

to criticize someone or something, often unfairly:

She knocks every suggestion I make.

(Definition of “knock verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)