brass knuckles• The writer was wearing a bulletproof vest and had brass knuckles and chemicalrepellent in other pockets.• William Joyce presented the clenchedfist in an armour of brass knuckles.• You know and then we were getting these whole boxes of brass knuckles or whatever.• Its gripconsisted of brass knuckles, was a chain of rings through which Wearyslipped his stubby fingers.