to knock sbdy out: to make somebody unconscious (usually by hitting them) verb
a knockout (boxing): a punch that leaves the opponent unconscious; a victory (boxing); a triumph noun
  • "Those sleeping pills knocked me out for &_ hours."
  • "Kevin : Anesthetic. To knock me out."
  • "In fact my mother advised me to avoid any kind of sports after I was knocked out by a softball in my local park."

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