Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
river in NE Alberta & S Northwest Territories, Canada, flowing from Lake Athabasca northwest into Great Slave Lake: 258 mi (415 km)
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 river, about 499 km (310 mi) long, of west-central Canada flowing between Lake Athabasca in northeast Alberta and Great Slave Lake in the southern Northwest Territories. It forms the central section of the Mackenzie River system.