MuskogeanPronunciation: /ˌmʌskəˈgiːən, mʌˈskəʊgɪən/Definition of Muskogean noun a family of American Indian languages spoken in SE North America, including Creek and Choctaw. adjective relating to the Muskogean language family. Origin:from Muskogee2 + -anMuskogean in other Oxford dictionaries Definition of Muskogean in the US English dictionary