bullmastiff

noun

bull·​mas·​tiff ˈbu̇l-ˈma-stəf How to pronounce bullmastiff (audio)
 also  ˈbəl-
: any of a breed of large powerful dogs developed in England by crossing bulldogs with mastiffs

Examples of bullmastiff in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
If your are looking for a guardian dog, the best options, according to the American Kennel Club (AKC), include German shepherd, doberman pinscher, bullmastiff, rottweiler, and Staffordshire bull terrier among others. Maria Azzurra Volpe, MSNBC Newsweek, 19 Aug. 2025 Bully breed is a generic term for a variety of terrier-type dogs like American pit bull terriers, bull terriers, bullmastiffs, Staffordshire terriers, Boston terriers, boxers and French bulldogs. Lisa Bloch, Mercury News, 22 July 2025 Upon entering, you might even be greeted by a big dog named Satchmo, a bullmastiff who lives in the bar. Marina Johnson, Detroit Free Press, 5 July 2023 Football: The nose of the bullmastiff is in the shape of a football. Jordan Mendoza, USA TODAY, 13 June 2023

Word History

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of bullmastiff was in 1830

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Cite this Entry

“Bullmastiff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bullmastiff. Accessed 11 Sep. 2025.

Kids Definition

bullmastiff

noun
bull·​mastiff
ˈbu̇l-ˌmas-təf
: any of a breed of large powerful dogs developed by crossing bulldogs with mastiffs

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