Allen key definition, meaning - what is Allen key in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “Allen key”

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Allen key

noun [C] uk   us   /ˈæl.ənˌkiː/ (also Allen wrench) trademark
an L-shaped metal tool with six sides that is used to turn a screw that has a six-sided hole in the top
(Definition of Allen key from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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