Cha·co
(chä′kō)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.
Chaco
(Spanish ˈtʃako) Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Cha•co
(ˈtʃɑ kɔ)
n. 1. a part of the Gran Chaco region in central South America, in Bolivia, Paraguay, and Argentina. ab. 100,000 sq. mi. (259,000 sq. km).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.