milk river milk punch • milk route · · · Info · Definitions · Characters · · milk river · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a river that rises in the Rockies in northwestern Montana and flows eastward to become a tributary of the Missouri River. Synonyms: Milk, Milk River. · · Noun Definition 1 Characters · · space U+0020 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B l latin small letter l U+006C m latin small letter m U+006D r latin small letter r U+0072 v latin small letter v U+0076