KO

KO

n.
  1. a knockout; a blow that renders the opponent unconscious; -- used especially in boxing. [acronym]

KO

v. t.

imp. & p. p. KO'd; p. pr. & vb. n. KO'ing

  1. To knock out; to deliver a blow that renders (the opponent) unconscious; -- used especially in boxing. [acronym]