Boxing , informal
verb (KO's, KO'ing, KO'd)[with object]
Knock (an opponent) out in a boxing match.
- Conn had KO'd his last four opponents, including heavyweights Buddy Knox and Gunnar Barlund, both in the 8th rounds.
- It's sort of like when Buster Douglas KO'd Mike Tyson.
- Those days may have ended when Mike Tyson got KO'd by Buster Douglas.
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