mastiff

noun
mas·​tiff | \ ˈma-stəf How to pronounce mastiff (audio) \

Definition 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

Illustration of mastiff

Illustration of mastiff

Examples of mastiff in a Sentence

Recent Examples on the Web Not one of those measly Cuban castoffs slinking around in the streets looking for a morsel to eat, but a mastiff sitting in the front seat of a car, barking its head off at those who dare cross its path. Harper's Magazine, 20 July 2021 Gardens surround both sheds and a greenhouse, and large gardens are along fences erected for privacy and to keep Annabelle, their French mastiff, safe. Joanne Kempinger Demski, Milwaukee Journal Sentinel, 10 June 2021 The inspiration for the book came from Yerkes’ own journey with a large, loving, life-affirming South African mastiff who earned the name -- appropriately enough at 150 pounds -- Big Boy. cleveland, 22 May 2021 Hoping to become a rock ‘n’ roll star, a young mastiff leaves his Tibetan village to find a legendary and reclusive musician who needs to write a new song. Los Angeles Times, 26 Mar. 2021 Hoping to become a rock ‘n’ roll star, a young mastiff leaves his Tibetan village to find a legendary and reclusive musician who needs to write a new song. Los Angeles Times, 26 Mar. 2021 Hoping to become a rock ‘n’ roll star, a young mastiff leaves his Tibetan village to find a legendary and reclusive musician who needs to write a new song. Los Angeles Times, 26 Mar. 2021 Hoping to become a rock ‘n’ roll star, a young mastiff leaves his Tibetan village to find a legendary and reclusive musician who needs to write a new song. Los Angeles Times, 26 Mar. 2021 Hoping to become a rock ‘n’ roll star, a young mastiff leaves his Tibetan village to find a legendary and reclusive musician who needs to write a new song. Los Angeles Times, 26 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mastiff.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mastiff

14th century, in the meaning defined above

History and Etymology for mastiff

Middle English mastif, from Medieval Latin mastivus, from Vulgar Latin *masuetivus, from Latin mansuetus tame — more at mansuetude

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The first known use of mastiff was in the 14th century

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Dictionary Entries Near mastiff

Masticura

mastiff

mastiff bat

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Cite this Entry

“Mastiff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mastiff. Accessed 24 Oct. 2021.

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More Definitions for mastiff

mastiff

noun

English Language Learners Definition of mastiff

: a type of large, powerful dog

mastiff

noun
mas·​tiff | \ ˈma-stəf How to pronounce mastiff (audio) \

Kids Definition of mastiff

: a very large powerful dog with a smooth coat

More from Merriam-Webster on mastiff

Nglish: Translation of mastiff for Spanish Speakers

Britannica.com: Encyclopedia article about mastiff

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