knockout

US /ˈnɑkˌaʊt/

UK /'nɒkaʊt/

C2

noun

  • An organism in which a particular gene has been inactivated.
  • A drug or other substance that causes someone to become unconscious.
  • A situation in boxing where a fighter is hit so hard that they fall to the ground and cannot get up before the referee counts to ten, thus losing the match.
  • A decisive victory or success.
  • A punch that makes a boxer unconscious

other

  • To defeat an opponent in boxing by hitting them so hard that they fall to the ground and cannot get up before the referee counts to ten.
  • To eliminate or defeat someone or something.
  • To make someone unconscious by hitting them.

adjective

  • Excellent, or wonderful; amazing
  • Extremely attractive or impressive.