(n.sing.&pl.) A tribe of North American Indians, which formerly occupied the region between the Wabash and Mississippi rivers.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). illinois. Retrieved September 21, 2026, from http://smartdefine.org/illinois/definitions/2018977 |
| Chicago | Webster's. 2011. "illinois" http://smartdefine.org/illinois/definitions/2018977 (accessed September 21, 2026). |
| Harvard | Webster's 2011, illinois, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/illinois/definitions/2018977>. |
| MLA | Webster's. "illinois" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/illinois/definitions/2018977> |