Mastiff
Pronunciation : Mas"tiff
Part of Speech : n.;
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. m?tin mastiff, OF. mastin.] (Zo?l.)
Definition : Defn: 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 (Zo?l.) , any bat of the genus Molossus; so called because the face somewhat resembles that of a mastiff.
pl. Mastiffs (. [Mastives is irregular and unusual.]
Source : Webster's Unabridged Dictionary, 1913