knock out Meaning, Definition & Usage

1. verb eliminate
   
   • knock out a target
2. verb knock unconscious or senseless
   kayo; knock cold.
   
   • the boxing champion knocked out his opponent in a few seconds
3. verb destroy or break forcefully
   
   • The windows were knocked out
4. verb overwhelm with admiration
   
   • All the guys were knocked out by her charm
5. verb empty (as of tobacco) by knocking out
   
   • knocked out a pipe

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