Akademik

knucks
noun
a small metal weapon; worn over the knuckles on the back of the hand
Syn: ↑brass knucks, ↑brass knuckles, ↑knuckles, ↑knuckle duster
Usage Domain: ↑plural, ↑plural form
Hypernyms: ↑weapon, ↑arm, ↑weapon system

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\\ˈnəks\ noun plural
Etymology: alteration of knuckles, plural of knuckle (I)
1. singular in construction : a game of marbles at the end of which the winner has the option of shooting a marble at the opponent's knuckles held on the ground
2. singular or plural in construction : brass knuckles

Useful english dictionary. 2012.