What is Knuckle-dusters?
1.
Melee weapon consisting of a piece of brass cast in a shape similar to four soldered rings through which you introduce your fingers. It also has a handle, so that you can grab it properly and use it to punch someone.
Of course, you begin the game unarmed and will actually spend a considerable length of time fighting either unarmed or with hand-to-hand weapons, including various shivs, knuckle-dusters, and clubs.
2.
slang for brass knuckles
He hid a pair of knuckle-dusters .
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