knocking
nounUK /ˈnɒkɪŋ/
US /ˈnɑːkɪŋ/
The sound someone makes when they hit a door with their hand.
I heard a loud knocking at the front door.
OTHER MEANINGS
2. The act of hitting something hard.
The knocking of the branches against the window kept me awake.
3. A criticism or bad remark about someone or something.
The new movie took a lot of knocking from the critics.
4. The sound an engine makes when it is not working well.
The old car made a strange knocking noise.