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English definition of “nut”

nut

noun [C] (METAL OBJECT)   /nʌt/
a small ring of metal that a bolt (= screw without a pointed end) can be screwed into to hold something in place: a wing nut (= a nut with flat edges for turning)
(Definition of nut noun (METAL OBJECT) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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