knock
Transitive VerbIntransitive Verb[C/U] Both
pl: knockspast: knockedpp: knockeding: knocking
This word carries a rhythmic and percussive quality, often associated with the anticipation of an arrival or the suddenness of an impact. It suggests a focused, repetitive action intended to bridge a barrier between two people or spaces.
Countable when referring to a single strike or a specific sound (a loud knock). Uncountable when referring to a mechanical rattling noise in an engine (engine knock).
Meanings
Transitive Verb
[someone][something]
To strike a surface with a hard object to attract attention or signal presence.
"He knocked on the door three times."
Intransitive Verb
[someone]
To strike a surface with a hard object to attract attention or signal presence.
"Someone is knocking at the window."