The Kootenay river.Licensed from iStockPhoto
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
also Koo·te·nai River
A river, about 780 km (485 mi) long, flowing from southeast British Columbia, Canada, south through northwest Montana, northwest through northern Idaho, and then north again into British Columbia, where it widens to form Kootenay Lake before joining the Columbia River.