WordReference Random House Unabridged Dictionary of American English © 2026
bull•mas•tiff
(bŏŏl′mas′tif, -mä′stif ),USA pronunciation n.
- Dog and Cat Breedsone of an English breed of dogs having a short, fawn or brindled coat, produced by crossing the bulldog and the mastiff.
- bull(dog) + mastiff 1870–75
'bullmastiff' also found in these entries (note: many are not synonyms or translations):