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A river of northwest South America rising in southwest Colombia and flowing about 1,610 km (1,000 mi) along the Colombia-Peru border to the Amazon River in northwest Brazil.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Putumayo(Spanish putuˈmajo )
(Placename) a river in NW South America, rising in S Colombia and flowing southeast as most of the border between Colombia and Peru, entering the Amazon in Brazil: scene of the Putumayo rubber scandal (1910–11) during the rubber boom, in which many Indians were enslaved and killed by rubber exploiters. Length: 1578 km (980 miles). Brazilian name: Içá
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Pu•tu•ma•yo(ˌpu tuˈmɑ yɔ)
a river in NW South America, flowing SE from S Colombia into the Amazon in NW Brazil. 900 mi. (1450 km) long. Portuguese, Içá.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.