knock🔊

An abrupt rapping sound, as from an impact of a hard object against wood.

A sharp impact.

(informal) A criticism.

(informal) A blow or setback.

{{cap|preignition}}, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it.

(slang) A batsman's innings.

(baseball) A ball hit into play, especially one that becomes a hit.

(hunger knock)

To rap one's knuckles against something, especially wood.

(dated) To strike for admittance; to rap upon, as a door.

(US) To criticize verbally; to denigrate; to undervalue.

(soccer) To kick a ball towards another player; to pass.

(baseball) To [[hit|#Verb|hit]] a ball into play.

(dated) To impress forcibly or strongly; to astonish; to move to admiration or applause.

(dated) To bump or impact.

(slang) To have sex with. +

(slang) To prosecute under the law; to arrest, imprison, etc.

(rummy) To end play by declaring one's hand to have under a certain amount of deadwood.