Definition of mastiff noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈmæstɪf//
; NAmE NAmE//ˈmæstɪf//
Domesticated mammals
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a large strong dog with short hair, often used to guard buildings See related entries: Domesticated mammals Word OriginMiddle English: from Old French mastin, based on Latin mansuetus ‘tame’.
See the Oxford Advanced American Dictionary entry: mastiff

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