knocking out or being knocked out
in boxing, a blow that knocks an opponent down for longer than a specified particular time and ends, usu a count of ten, and results in the termination of the match
= technical knockout
a competition with successive rounds in which losing competitors are eliminated
a competition or tournament with successive rounds in which losing competitors are eliminated until a winner emerges in the final
(used before a noun) being such a contest
a knockout competition
informal a somebody or something that is sensationally striking or attractive person or thing