Meaning : Deliver a sharp blow or push.
Example :
He knocked the glass clear across the room.
Synonyms : strike hard
Meaning : Rap with the knuckles.
Example :
Knock on the door.
Meaning : Make light, repeated taps on a surface.
Example :
He was tapping his fingers on the table impatiently.
किसी सतह पर ठक-ठक, खट-खट या खड़-खड़ की आवाज़ करना।
देखो, कौन दरवाज़ा खटखटा रहा है !।Meaning : Find fault with. Express criticism of. Point out real or perceived flaws.
Example :
The paper criticized the new movie.
Don't knock the food--it's free.
Synonyms : criticise, criticize, pick apart