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Definition of Knuckle duster
1. Noun. A small metal weapon; worn over the knuckles on the back of the hand. 
Exact synonyms: Brass Knuckles, Brass Knucks, Knuckles, Knucks
Generic synonyms: Arm, Weapon, Weapon System
Language type: Plural, Plural Form
Generic synonyms: Arm, Weapon, Weapon System
Language type: Plural, Plural Form



