knock out🔊

''To strike or render unconscious''

To strike or bump (someone or something) out.

(idiomatic) To render unconscious, as by a blow to the head.

(idiomatic) To put to sleep.

(idiomatic) To fall asleep, especially suddenly.

(idiomatic) To exhaust.

(idiomatic) To impress, surpass or overwhelm (someone).

(slang) To defeat or kill (someone).

(idiomatic) To cause a mechanism to become non-functional by damaging or destroying it.

To eliminate from a contest or similar.

To communicate (a message) by knocking.

(informal) To complete, especially in haste; knock off.

To lose the scent of hounds in fox-hunting.

(Oxford University slang) To leave college after hours—after half-past ten at night when the doors have been locked.

(Australia) To obtain or earn (something, often money or food).

(UK) To sell.