The Grand Coulee Dam.Licensed from iStockPhoto
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
dam on the Columbia River, NE Wash.: 550 ft (167 m) high; over 4,000 ft (1,220 m) long
Used by arrangement with John Wiley & Sons, Inc.
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.
A gorge, about 48 km (30 mi) long, of north-central Washington, carved by the Columbia River. It is fed by water from the Grand Coulee Dam (built 1933-1942).