Pronunciation: (il"u-noi', -noiz'),[key] —n. 1. a state in the central United States: a part of the Midwest. 11,418,461; 56,400 sq. mi. (146,075 sq. km). Cap.: Springfield. Abbr.: IL (for use with zip code), Ill.
2. a river flowing SW from NE Illinois to the Mississippi River: connected by a canal with Lake Michigan. 273 mi. (440 km) long.
Pronunciation: (il"u-noi' or, sometimes, -noiz'),[key] —n., —pl.-noisPronunciation: (-noi', -noiz').[key] 1. a member of a confederacy of North American Indians of Algonquian stock, formerly occupying Illinois and adjoining regions westward.
2. the Algonquian language of the Illinois and Miami Indians.