mastiff masticurous • Mastigamoeba · · · Info · Definitions · Characters · · mastiff · · Text Latin · · Script 7 · · Length Definitions · · · (noun) an old breed of powerful deep-chested smooth-coated dog used chiefly as a watchdog and guard dog. · · Noun Definition 1 Characters · · a latin small letter a U+0061 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D s latin small letter s U+0073 t latin small letter t U+0074