n. pl. a small metal weapon, worn over the knuckles on the back of the hand; called also brass knuckles and knuckle duster. Syn. -- brass knucks, knucks, brass knuckles, knuckle duster. [ WordNet 1.5 ]
[けんつくをくわせる, kentsukuwokuwaseru](exp, v1) to angrily reject; to snub; to give a person a good scolding; to give a person a rap on the knuckles[Add to Longdo]