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[From the white interior of its mouth.]
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.


(Animals) another name for the water moccasin
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkɒt nˌmaʊθ)

n., pl. -mouths (-ˌmaʊθs, -ˌmaʊðz)
a pit viper, Agkistrodon piscivorus, of southeastern U.S. swamps.
Also called water moccasin.
[1825–35, Amer.; so called from the whiteness of its lips and mouth]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cottonmouth - venomous semiaquatic snake of swamps in southern United Statescottonmouth - venomous semiaquatic snake of swamps in southern United States
pit viper - New World vipers with hollow fangs and a heat-sensitive pit on each side of the head
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
If you particularly liked gators and snakes, on the other side of town, Texas Jim Mitchell ran the Framalopa Reptile Farm, which featured dozing rattlesnakes, coral snakes, cottonmouth moccasins, black snakes, gopher snakes, and chicken snakes; a wildcat, looking forlornly out of its too-small cage; a senile lion that could barely yawn; and two chained monkeys that every so often would do something so obscene that the women would avert their eyes and the men would nudge each other.
Osceola country is also home to cottonmouth moccasins and diamondback rattlers so the ideal boot is waterproof, fang-proof and just as important, friendly to the feet.
Cottonmouth moccasins are distinctive in that they rarely attack people, and copperheads have a poison that is rarely of sufficient strength to be lethal to a healthy adult.