
• (n. pl.) A tribe of Indians native of Arizona and the adjacent parts of Mexico and California. They are agricultural, and cultivate corn, wheat, barley, melons, etc.
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http://thinkexist.com/dictionary/meaning/yumas/
Yu'mas noun plural ; sing.
Yuma (Ethnol.) A tribe of Indians native of Arizona and the adjacent parts of Mexico and California. They are agricultural, and cultivate corn, wheat, barley, melons, etc. » The a wider sense, the term sometimes includes the Mohaves and othe...
Found on
http://www.encyclo.co.uk/webster/Y/8

The Yumas are a North American Indian people also called the Cuchans. They formerly occupied both banks of the Colorado above the river Gila confluence in Arizona and the San Diego district of California.
Found on
http://www.probertencyclopaedia.com/browse/CXY.HTM
No exact match found.