knock out knock out /ˈnɑkˌaʊt/

verb

1. () Eliminate  ( knock out )
   eliminate
    Knock out a target
   knock out a target
   
2. () Knock unconscious or senseless  ( kayo [Informal] , knock cold , knock out )
   knock unconscious or senseless
    The boxing champion knocked out his opponent in a few seconds
   the boxing champion knocked out his opponent in a few seconds
   
3. () Destroy or break forcefully  ( knock out )
   destroy or break forcefully
    The windows were knocked out
   The windows were knocked out
   
4. Empty (as of tobacco) by knocking out  ( knock out )
   empty (as of tobacco) by knocking out
    Knocked out a pipe
   knocked out a pipe
   
5. Overwhelm with admiration  ( knock out )
   overwhelm with admiration
    All the guys were knocked out by her charm
   All the guys were knocked out by her charm