kayo

[ key-oh, key-oh; verb key-oh ]
/ ˈkeɪˈoʊ, ˈkeɪˌoʊ; verb ˈkeɪˈoʊ /
Slang.

noun, plural kay·os, verb, kay·oed, kay·o·ing.

Origin of kayo

An Americanism dating back to 1920–25

Definition for kayos (2 of 2)

KO

or K.O., k.o., kay·o

[ noun key-oh, key-oh; verb key-oh ]
/ noun ˈkeɪˈoʊ, ˈkeɪˌoʊ; verb ˈkeɪˈoʊ /
Slang.

noun, plural KO's.

a knockout in boxing.

verb (used with object), KO'd, KO'ing.

to knock unconscious, especially in a boxing match; knock out.

Origin of KO

First recorded in 1920–25; initial letters of knock out
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for kayos (1 of 2)

kayo

KO

slang

noun plural kayos

boxing another term for knockout

verb kayoes, kayos, kayoing or kayoed

boxing another term for knock outSee knockout (verb)

Word Origin for kayo

C20: from the initial letters of knock out

British Dictionary definitions for kayos (2 of 2)

KO

k.o.

/ (ˈkeɪˈəʊ) /

verb KO's, KO'ing, KO'd, k.o.'s, k.o.'ing or k.o.'d

a slang term for knock outSee knockout

noun plural KO's or k.o.'s

a slang term for knockout
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012