cottonmouth cotton mouse • cottonmouth moccasin · · · Info · Definitions · Synonyms · Characters · · cottonmouth · · Text Latin · · Script 11 · · Length 3 · · Syllables Definitions · · · (noun) venomous semiaquatic snake of swamps in southern United States. Synonyms: water moccasin, cottonmouth moccasin, Agkistrodon piscivorus. · · Noun Definition 1 Synonyms · · · water moccasin · · Synonym 1 cottonmouth moccasin · · Synonym 2 agkistrodon piscivorus · · Synonym 3 Characters · · c latin small letter c U+0063 h latin small letter h U+0068 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074 u latin small letter u U+0075