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bullfrog

American  
[bool-frog, -frawg] / ˈbʊlˌfrɒg, -ˌfrɔg /

noun

  1. a large frog, especially the North American Rana catesbeiana, having a deep voice.


bullfrog British  
/ ˈbʊlˌfrɒɡ /

noun

  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

Etymology

Origin of bullfrog

1690–1700, bull 1 + frog 1; so called from its size and voice

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers reviewed existing scientific literature, examined museum specimens from around the world, analyzed fungal genetics from Brazilian bullfrog farms, and studied bullfrogs sold internationally.

From Science Daily • Jan. 19, 2026

"I sing like a bullfrog," he once told record producer Fred Foster.

From BBC • Sep. 30, 2024

By the time spring arrived, not a single bullfrog remained; maybe half of the usual contingent of green frogs appeared to have survived.

From Seattle Times • Oct. 18, 2023

Never mind that when she sang and danced, she sounded like a bullfrog on steroids and moved like a drunken stevedore.

From New York Times • Apr. 24, 2023

It was so quiet that Winnie almost jumped when the bullfrog spoke again.

From "Tuck Everlasting" by Natalie Babbit

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