The meaning of knock is to strike something with a sharp blow A knock at/on the door How to use knock in a sentence.
To repeatedly hit something, producing a noise Knock noun [c] (noise) a sudden short noise made when something or someone hits a surface If an engine is knocking, it is producing a…
To strike a sounding blow with the fist, knuckles, or anything hard, especially on a door, window, or the like, as in seeking admittance, calling attention, or giving a signal. If you knock something or someone, you criticize them and say unpleasant things about them. To hit something (such as a door) with the knuckles of your hand or with a hard object (such as a knocker) in order to get people's attention usually + on sometimes used figuratively To hit (something or someone) in a forceful way
When you knock, you bump or strike someone or something When you hear a knock at the door, someone on the other side is thumping it with their knuckles.
