Illustration of mastiff
: any of a breed of very large massive powerful smooth-coated dogs that are apricot, fawn, or brindle and are often used as guard dogs
Examples of mastiff in a Sentence
Recent Examples on the Web
And there's a tiny goldfish in there, just doing his best to control this big, goofy mastiff body.
—
Arika Herron, Axios, 3 Feb. 2025
The viral clip shows the mastiff puppy's courageous first steps toward befriending the Labrador—her new sibling—resulting in a moment of gentle companionship that has resonated deeply with viewers on the app.
—Michael Gfoeller and David H. Rundell, Newsweek, 15 Jan. 2025
His oxygen tank sat at his knees like an obedient mastiff.
—Brandon Taylor, The Atlantic, 4 Jan. 2025
Hearts Melt Over Girl's Bond With Puppy By Melissa Fleur Afshar
Life and Trends Reporter
0
The heartwarming bond between a Pennsylvania girl and her 200-pound English mastiff has melted the hearts of viewers online.
—Dan Perry, Newsweek, 2 Jan. 2025
See all Example Sentences for mastiff 
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Arika Herron, Axios, 3 Feb. 2025
The viral clip shows the mastiff puppy's courageous first steps toward befriending the Labrador—her new sibling—resulting in a moment of gentle companionship that has resonated deeply with viewers on the app.
—Michael Gfoeller and David H. Rundell, Newsweek, 15 Jan. 2025
His oxygen tank sat at his knees like an obedient mastiff.
—Brandon Taylor, The Atlantic, 4 Jan. 2025
Hearts Melt Over Girl's Bond With Puppy By Melissa Fleur Afshar
Life and Trends Reporter
0
The heartwarming bond between a Pennsylvania girl and her 200-pound English mastiff has melted the hearts of viewers online.
—Dan Perry, Newsweek, 2 Jan. 2025
See all Example Sentences for mastiff
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Cite this Entry
“Mastiff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mastiff. Accessed 11 Feb. 2025.
Copy CitationKids Definition
mastiff
noun
mas·tiff
ˈmas-təf 
: any of a breed of large powerful smooth-coated dogs often used as watchdogs and guard dogs
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