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KO

or K.O., k.o., kay·o

[noun key-oh, key-oh; verb key-oh]Slang.
See more synonyms for KO on Thesaurus.com
noun, plural KO's.
  1. a knockout in boxing.
verb (used with object), KO'd, KO'ing.
  1. 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. 2018

Related Words for ko'd

hit, beat, tap, punch, slap, hurt, smack, fell, batter, flatten, damage, whack, bash, annihilate, expunge, exterminate, ravage, erase, eliminate, smash
British Dictionary definitions for ko'd

KO

k.o.

verb KO's, KO'ing, KO'd, k.o.'s, k.o.'ing or k.o.'d
  1. a slang term for knock outSee knockout
noun plural KO's or k.o.'s
  1. 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