Osage

noun

1. pl. Osag′·es or Osage′ a member of a North American Indian people that migrated, over time, from the east coast of the U.S. to the Piedmont, then to Missouri, Kansas, and Oklahoma
2. the Siouan language of this people

Etymology: < Osage Wazhazhe

river in central Mo. & E Kans., flowing east into the Missouri: c. 500 mi (805 km)

Etymology: after Osage