1. (

• Osage

) a member of the Siouan people formerly living in Missouri in the valleys of the Missouri and Osage rivers; oil was found on Osage lands early in the 20th century ;

2. (

• Osage ,
• Osage_River

) a river in Missouri that is a tributary of the Missouri River ;

3. (

• Osage

) the Dhegiha dialect spoken by the Osage ;