noun
a small metal weapon; worn over the knuckles on the back of the hand
• Syn: ↑knucks, ↑brass knuckles, ↑knuckles, ↑knuckle duster
• Usage Domain: ↑plural, ↑plural form
• Hypernyms: ↑weapon, ↑arm, ↑weapon system
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noun plural but singular or plural in constructionsee brass knuckles
Useful english dictionary. 2012.