bull mastiff bull market • bull meat · · · Info · Definitions · Characters · · bull mastiff · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) large powerful breed developed by crossing the bulldog and the mastiff. Synonyms: bull mastiff. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075