mastiff
/ˈmæstɪf/ noun
Forms mastiffs mastives
- noun One of an old breed of powerful, deep-chested, and smooth-coated dogs, used chiefly as watchdogs and guard dogs.
Etymology
From Middle English mastif, mastyf, an aberrant derivation (with influence from Old French mestif) from Old French mastin (modern French mâtin), from Vulgar Latin *mansuetinus (“tamed (animal)”), from Latin mansuetus (“tamed”).
Webster’s 1913
- noun A breed of large dogs noted for strength and courage. There are various strains, differing in form and color, and characteristic of different countries. Mastiff bat (Zoöl.) , any bat of the genus Molossus; so called because the face somewhat resembles that of a mastiff.
Etymology [Prob. fr. Prov. E. masty, adj., large, n., a great dog, prob. fr. mast fruit, and hence, lit., fattened with mast. There is perh. confusion with OF. mestif mongrel; cf. also F. mâtin mastiff, OF. mastin.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “mastiff”, CC BY-SA 4.0. Details