knock
US /nɑk/
・UK /nɒk/
A2
noun
- Bad experience that reduces a person's confidence
- Action of something solid hitting something hard
verb
- To criticize someone in an unreasonable way
- To hit something to get people's attention
- To strike something hard, causing damage
Examples
I knocked my head on one of the beams.
He had knocked one of the pictures off the wall.