1. Midwestern state of the NC U.S.: admitted, 1846; 55,869 sq mi (144,701 sq km); pop. 2,926,000; cap. Des Moinesabbrev. IA or Ia
2. river flowing from N Iowa southeast into the Mississippi: c. 300 mi (483 km)
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Iowa'Fr ayoés, earlier aiou[h]ouea, etc., prob. via Illinois < Dakota ayúxba, lit., ? the sleepy ones