Definition of "knuckleduster" []

• Alternative spelling of knuckle duster. (noun)

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• "Police had found an extendable baton and a knuckleduster in his Mercedes after being called to his Plymouth home following allegations he hit his former wife, although no charges were pressed in relation to the assault allegation."
• "Farrell, 29, who served as a sniper with the marines in conflicts including Iraq, Afghanistan and Kosovo, has a conviction for possessing an extendable baton and a knuckleduster that he did not disclose to the production company that makes the show."
• "But it is the way in which, when it feels threatened, the EU reaches instinctively for the metaphorical knuckleduster and cosh in order to discourage and suppress dissent within its ranks that ought to give anyone with half a mind pause for thought."