noun
EXAMPLES FROM CORPUS
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Its grip consisted of brass knuckles , was a chain of rings through which Weary slipped his stubby fingers.
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The writer was wearing a bulletproof vest and had brass knuckles and chemical repellent in other pockets.
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William Joyce presented the clenched fist in an armour of brass knuckles .
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You know and then we were getting these whole boxes of brass knuckles or whatever.