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Any of several large, heavy-bodied frogs, especially Rana catesbeiana, native to eastern North America and introduced elsewhere, having a characteristic deep resonant croak.
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) any of various large frogs, such as Rana catesbeiana (American bullfrog), having a loud deep croak
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a large North American frog, Rana catesbeiana, having a deep voice.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||bullfrog - largest North American frog; highly aquatic with a deep-pitched voice|
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Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
bullfrog[ˈbʊlfrɒg] n → grenouille-taureau f
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
bullfrog[ˈbʊlˌfrɒg] n → rana toro
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995