A bridge over the Paraguay 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.
A river rising in southwest Brazil and flowing about 2,574 km (1,600 mi) southward to the Paraná River in southwest Paraguay. Part of its course forms the border between the two countries.