• noun:   a dialect of the Chiwere language spoken by the Missouri people
• noun:   a midwestern state in central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union
• noun:   the longest river in the United States; arises in Montana and flows southeastward to become a tributary of the Mississippi at Saint Louis
• noun:   a member of the Siouan people formerly inhabiting the valley of the Missouri river in Missouri

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