Pronunciation: (ō'sāj, ō-sāj'), [key]
—pl. O•sag•es, (esp. collectively) O•sage for 1.
1. a member of a North American Indian people formerly of western Missouri, now living in northern Oklahoma.
2. the Siouan language of the Osage.
3. a river flowing E from E Kansas to the Missouri River in central Missouri. 500 mi. (800 km) long.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.