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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. 2018.
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Examples from the Web for bullfrog
Historical Examples
  • If he gets in Grasshopper, you score 20; if into bullfrog, you score 30; and if into Kangaroo, 40.

  • This is even more marked in the large tadpole of the bullfrog.

  • But it was only a pickerel rising to his food or a bullfrog plunging in.

    The Incendiary W. A. (William Augustine) Leahy
  • Their bait was a bullfrog, or several small frogs in a bunch, for want of squid.

    Cape Cod Henry D. Thoreau
  • You look like the bullfrog on the bank and the pollywog in the pool.

  • I had only saw it when the frost and the bullfrog were heaving out of the ground.

    A Guest at the Ludlow and Other Stories Edgar Wilson (Bill) Nye
  • Old 101 bullfrog was a very big fellow, and I think you can get it on.

    The Joyous Story of Toto Laura E. Richards
  • There was a flop in the water, and the bullfrog disappeared from sight.

    Bumper, The White Rabbit George Ethelbert Walsh
  • There was also one containing Freckles' bullfrog, true to life.

    Freckles Gene Stratton-Porter
  • No sound broke the stillness save the far-off bark of a dog or an occasional croak from a bullfrog.

    Mr. Opp Alice Hegan Rice
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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