Also found in: Thesaurus, Wikipedia.
A river rising in northeast Illinois and flowing about 530 km (330 mi) generally southwest to the Mississippi River in west-central Illinois.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Switch to new thesaurus
|Noun||1.||Illinois River - a river in Illinois that flows southwest to the Mississippi River|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.