- a member of a North American Indian people formerly of western Missouri, now living in northern Oklahoma.
- the Siouan language of the Osage.
- a river flowing E from E Kansas to the Missouri River in central Missouri. 500 miles (800 km) long.
- a member of a North American Indian people formerly living in an area between the Missouri and Arkansas Rivers
- the language of this people, belonging to the Siouan family