K o knuckle tooth • koa finch · · · Info · Definitions · Synonyms · Characters · · K o · · Text Common · · Latin · · Scripts 3 · · Length Definitions · · · (noun) a blow that renders the opponent unconscious. Synonyms: knockout, KO, kayo. · · Noun Definition 1 Synonyms · · · kelvin · · Synonym 1 k · · Synonym 2 potassium · · Synonym 3 atomic number 19 · · Synonym 4 thousand · · Synonym 5 one thousand · · Synonym 6 1000 · · Synonym 7 m · · Synonym 8 chiliad · · Synonym 9 g · · Synonym 10 grand · · Synonym 11 thou · · Synonym 12 yard · · Synonym 13 kilobyte · · Synonym 14 kb · · Synonym 15 kibibyte · · Synonym 16 kib · · Synonym 17 Characters · · space U+0020 K latin capital letter k U+004B o latin small letter o U+006F