Allen key

noun [C]

/ˈæl.ənˌkiː/ (also Allen wrench) trademark

Definition

› an L-shaped metal tool with six sides that is used to turn a screw with a six-sided hole in the topToolsGardening tools

(Definition of Allen key noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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Synonyms and related words:

to get rid of something or someone that is not wanted or needed

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