A state of the United States, named for the people. / A confederation of Algonquian tribes who lived in the Mississippi River Valley.

A member of the above-mentioned tribe.

(linguistics) An indigenous Algonquian language spoken in the United States, primarily in Illinois, Missouri, Indiana, western Ohio and adjacent areas along the Mississippi River.

Of or relating to Illinois, one of the United States.

A native or resident of the state of Illinois in the United States of America.

plural of Illinoisan

A resident of Illinois.

plural of Illinoisian