[ bool-frog, -frawg ]
See synonyms for bullfrog on Thesaurus.com
  1. 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

Words Nearby bullfrog

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use bullfrog in a sentence

  • Old Croaky was a granddaddy bullfrog with whom they were very well acquainted, for he sang for them every evening.

    Every Girl's Book | George F. Butler
  • In the green frog and bullfrog the metamorphosis is not completed until the beginning of the second summer.

    A Civic Biology | George William Hunter
  • "Better stay home, better stay home," croaked old Grandfather bullfrog from his seat on a stump by the edge of the pond.

    Sandman's Goodnight Stories | Abbie Phillips Walker
  • Oom Leeuw crept up slowly, quietly, like a skelm, behind Brother bullfrog.

    Outa Karel's Stories | Sanni Metelerkamp
  • The bullfrog and leopard frog probably take heavy toll of both the adults and the newly metamorphosed young at the breeding ponds.

British Dictionary definitions for bullfrog


/ (ˈbʊlˌfrɒɡ) /

  1. 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