1. a knockout; also fig. use.
|TAD Lex. (1993) 53: Sleepy Mickey Finnegan who took a fine lacing for a round then put the k.o. on his man.in Zwilling|
|Salt Lake Trib. 23 Feb. 27/1: Little ‘Kayo’ Brown finished flat on his back.|
|N.Z. Truth 9 Jan. 6/1: [headline] Australian Scores K.O. in Round One.|
|TAD Lex. (1993) 51: Champion Has Two Sets To Kayo.in Zwilling|
|Iron Man 26: Speed won by a K.O.|
|‘On Broadway’ 15 Nov. [synd. col.] When he wanted to be sure of a quick kayo, he’s put one [i.e. roll of nickels] in each fist.|
|Harder They Fall (1971) 8: Frank [...] had him on the verge of a kayo in the early rounds.|
|Lead With Your Left (1958) 8: Ten amateur fights with nine kayos. Nine kayos, Mrs. Wintino.|
|Breaking of Bumbo (1961) 93: All we are is a lousy punch-drunk ex-champ, between a couple of real big men, jockeying around for the K.O.|
|Tattoo the Wicked Cross (1981) 28: A professional fighter with a string of kayos to his credit.|
|Holy Smoke 14: Down he goes with a lump on his scone like a rockmelon. A straight K.O.|
|Slow Boats to China (1983) 43: As a boxer will study an opponent on film to decide whether to take it slow and tricky or go for a kayo in the first round.|
|You Bright and Risen Angels (1988) 325: This was K.O. on the O.K.|
|Pugilist at Rest 66: I lost on a K.O.|
|Rope Burns 16: Two wins by kayo.|
|IOL News SA 20 Oct. [Internet] Chiefs suffer another early KO [...] a party atmosphere matched by a five-goal Telkom knockout thriller.|
2. in fig. use, death or termination.
|letter in Dear Folks at Home (1919) 215: Everyone of their American boys are putting the K.O. on the Big, Brave, and Best German soldiers.|
|Gentlemen of the Broad Arrows 199: We all thought you had taken the K.O.|
|Iceman Cometh Act III: Some party last night, huh? Jees, what a funeral! It was jinxed from de start, but his tellin’ about his wife croakin’ put de K.O. on it.|
3. attrib. use of sense 2.
|(ref. to 1920s) Over the Wall 71: This was almost a kayo punch good for a ten count.|
|Lucky Palmer 125: A middleweight with a K.O. punch in either mitt.|
|Entrapment (2009) 136: [of knock-out drops] It’s time to go the kayo route, Baby.‘Watch Out for Daddy’ in|
|Hooky Gear 8: I done ju-jitsu an busted Duanes KO hand one time.|
see knockout drops n.