any of a genus (Alouatta, family Cebidae) of large New World monkeys with a loud, howling cry and a long, prehensile tail
: occasionally called howling monkey
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.