moreau river more than • moreen · · · Info · Definitions · Characters · · moreau river · · Text Common · · Latin · · Scripts 12 · · Length 5 · · Syllables Definitions · · · (noun) a river that rises in western South Dakota and flows eastward to the Missouri River. Synonyms: Moreau River. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075 v latin small letter v U+0076