Sunrise over the Madre de Dios.Licensed from iStockPhoto
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
river in SE Peru & N Bolivia, flowing east into the Beni: c. 700 mi (1,127 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 1,126 km (700 mi) long, of southeast Peru and northwest Bolivia flowing northeast from the Andes to the Beni River.