Illinois

noun

pl. Illinois a member of a confederacy of North American Indian peoples that lived in N Illinois, S Wisconsin, and parts of Iowa and Missouri
the Algonquian language of this people

Midwestern state of the U.S.: admitted, 1818; 55,584 sq mi (143,961 sq km); pop. 12,419,000; cap. Springfield: abbrev. IL or Ill
river in Ill., flowing from southwest of Chicago into the Mississippi, near St. Louis: c. 273 mi (439 km)

See Illinois in American Heritage Dictionary 4

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