kayo

noun

1. A knockout.

   “His stunning title-winning kayo of Charles captivated the country, and on top of everything, he was actually an amazing fighter for one of his years, both as a puncher and boxer.”

verb

1. To knock someone out, or render them unconscious or senseless.

   “When Lee Savold, a perennial heavyweight title contender, was kayoed by the great Joe Louis, he was asked by reporters, did anyone in his lengthy career hit harder than Joe?”