Bare-knuckle means without gloves, bandages or any other protection for and/or dangerous 'arming' (such as a knuckle-duster) of the knuckles, a larger part or even the whole hand. It refers specifically to:
Fighting in ice hockey, in ice hockey rule books, fighting is referred to as "fisticuffs" as they fight without gloves, and is therefore "bare-knuckle".
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