1. to hit or strike (someone) suddenly and hard, especially on the head or jaw, often without warning
Usage: informal; third person singular present tense or plural noun form

Examples

• He coldcocks his opponent with a surprise right hook.
• The boxer coldcocks his rival in the second round.
• She coldcocks the bully after he insults her friend.
• The character coldcocks the villain in the action movie.
• He coldcocks the intruder and calls the police.