mouthwash mouthroot • mouthwise · · · Info · Definitions · Synonyms · Characters · · mouthwash · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a medicated solution used for gargling and rinsing the mouth. Synonyms: gargle. · · Noun Definition 1 Synonyms · · · gargle · · Synonym 1 Characters · · a latin small letter a U+0061 h latin small letter h U+0068 m latin small letter m U+006D o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 w latin small letter w U+0077