knock out

Definitions

General English

  • phrasal verb to hit someone so hard that they are no longer conscious
  • phrasal verb to make someone go to sleep

Military

  • verb to destroy a vehicle

Slang

  • verb to sell or distribute. In this sense the phrase probably originates in illegal auctions where the apportioning of the (usually stolen) goods was accompanied by the rap of a gavel. The term is now typically used by or of street traders.

Sports

  • verb to knock an opponent down for a count of ten, thus winning the match
  • verb to eliminate an opponent or team from a competition by winning a match or game
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