missouri Meaning, Definition & Usage

1. 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
   MO; Show Me State.
   
2. noun the longest river in the United States; arises in Montana and flows southeastward to become a tributary of the Mississippi at Saint Louis
   Missouri River.
   
   • The Missouri and Mississippi Rivers together form the third longest river in the world
3. noun a member of the Siouan people formerly inhabiting the valley of the Missouri river in Missouri
   
4. noun a dialect of the Chiwere language spoken by the Missouri
   

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