Osages

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O·sage

O0133100 (ō′sāj′, ō-sāj′)n. pl. Osage or O·sag·es 1. A member of a Native American people formerly inhabiting western Missouri and later southeast Kansas, with a present-day population in north-central Oklahoma. Substantial oil reserves were discovered on Osage lands in the early 1900s.2. The Siouan language of the Osage.
[French, from Osage wazházhe, ethnic self-designation.]
O′sage′ adj.