The meaning of KNOCKOUT is the act of knocking out : the condition of being knocked out. How to use knockout in a sentence.

A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, Muay Thai, mixed martial arts, karate, some forms of taekwondo …

5 days ago · The 2025 NBA Cup knockout rounds have been determined. Here's what to know before those games commence.

knock•out (ˈnɒkˌaʊt) n. 1. an act or instance of knocking out. 2. the state or fact of being knocked out. 3. a knockout blow. 4. Informal. a person or thing overwhelmingly attractive, appealing, or successful.

knockout noun [C] (COMPETITION) (US elimination tournament) a competition in which only the winners of each stage play in the next stage, until one competitor or team is the final winner:

an act or instance of knocking out. the state or fact of being knocked out. a knockout blow. Informal., a person or thing overwhelmingly attractive, appealing, or successful.

If you describe someone or something as a knockout, you think that they are extremely attractive or impressive.

a panel in a casing, can, or box, esp. of metal or plastic, so designed that it can readily be removed, as by punching, hammering, or cutting, to provide an opening into the interior: a knockout in a junction box.

Definition of knockout noun from the Oxford Advanced Learner's Dictionary. The match ended in knockout in the fifth round. Sanchez won by a second-round knockout. (informal) a person or thing …

Oct 31, 2025 · knockout (plural knockouts) The act of making one unconscious, or at least unable to come back on one's feet within a certain period of time; a TKO.