A member of the above-mentioned tribe.

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

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

plural of Illinoisian

A resident of Illinois.

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

plural of Illinoisan

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