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[boo l-frog, -frawg] /ˈbʊlˌfrɒg, -ˌfrɔg/
a large frog, especially the North American Rana catesbeiana, having a deep voice.
Origin of bullfrog
1690-1700, Americanism; bull1 + frog1; so called from its size and voice Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for bullfrog
  • The amphibians in the golf course ponds also only thrived there if no bullfrog tadpoles were present.
  • He likes the way eyes can play tricks--show a giant bullfrog can turn out to be a cedar tree or a traffic sign.
  • It was really tough to put the bullfrog stew into my mouth.
  • All waters of the state are open to bullfrog hunting except waters within state and federal wildlife refuges.
  • After locating a bullfrog, slowly work your way toward it while your partner keeps the flashlight trained on its eyes.
British Dictionary definitions for bullfrog


any of various large frogs, such as Rana catesbeiana (American bullfrog), having a loud deep croak
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for bullfrog

also bull-frog, 1738, from bull (n.1) + frog (n.1). So called for its voice.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for bullfrog



A male hitchhiker (1960s+ Truckers)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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