knock on

knock on something

to rap or tap, often with the knuckles, on something. (See also knock on wood.) She knocked on the door several times. Knock on it again. Maybe she didn't hear you.

Common Names:

Name	Pronounced	Usage
Roch	RAWKH (Polish)	French, Polish
LudmiŁA	luwt-MEE-wah	Polish
Haluk	-	Turkish
ĐUro	JOO-ro	Croatian, Serbian
Liane	lee-AH-nə	German
Astra	AS-trə	English (Rare)