/ Dictionary / Index B bullfrog: Meaning and Definition of Find definitions for: bull•frog Pronunciation: (bool'frog", -frôg"), [key] — n. a large frog, esp. the North American Rana catesbeiana, having a deep voice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bullfrog (Thesaurus) bull float bull gear Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language