∙ An abrupt rapping sound, as from an impact of a hard object against wood
∙ An impact.
∙ criticism figuratively
∙ a batsman's innings. cricket
∙ Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition or the characteristic knocking sound associated with it. automotive
∙ Synonym of hunger knockcycling
Verb
∙ To rap one's knuckles against something, especially wood. intransitive
∙ To strike for admittance; to rap upon, as a door. transitive, dated
∙ To bump or impact. transitive, intransitive, dated
∙ To denigrate, undervalue. colloquial
∙ To pass, kick a ball towards another player. soccer
∙ To impress strongly or forcibly; to astonish; to move to admiration or applause. slang, dated, Britain
Watch example usage of "knock"
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