A "Knockout Punch" refers to a powerful strike in boxing or mixed martial arts that results in an opponent being unable to continue the fight. This punch typically delivers a significant amount of force, often targeting the head, leading to a loss of consciousness or a technical knockout. In a broader context, the term can also describe any decisive action or argument that effectively ends a debate or competition. For example, a persuasive speech might contain a knockout punch that sways the audience's opinion dramatically, making it a memorable and impactful moment.