water horehound water hole • waterhorse · · · Info · Definitions · Synonyms · Characters · · water horehound · · Text Common · · Latin · · Scripts 15 · · Length 5 · · Syllables Definitions · · · (noun) aromatic perennial herb of United States. Synonyms: water horehound, Lycopus americanus. · · Noun Definition 1 Synonyms · · · lycopus americanus · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 w latin small letter w U+0077