knuckle-duster knuckle-deep • knuckle gear · · · Info · Definitions · Synonyms · Characters · · knuckle-duster · · Text Common · · Latin · · Scripts 14 · · Length Definitions · · · (noun) a small metal weapon; worn over the knuckles on the back of the hand. Synonyms: brass knucks, knucks, brass knuckles, knuckles, knuckle duster. · · Noun Definition 1 Synonyms · · · brass knucks · · Synonym 1 knucks · · Synonym 2 brass knuckles · · Synonym 3 knuckles · · Synonym 4 knuckle duster · · Synonym 5 Characters · · - hyphen-minus U+002D c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 k latin small letter k U+006B l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075