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English definition of “nut”

nut

noun [C]     /nʌt/
FOOD B2 the dry fruit of some trees that grows in a hard shell, and can often be eaten: a brazil/cashew nutFruits and seeds and their partsTypes of edible nut
METAL a piece of metal with a hole in it through which you put a bolt (= metal pin) to hold pieces of wood or metal togetherToolsGardening tools
KEEN informal a person who is keen on a particular subject or hobby: She's a real sports nut.EnthusiastsAdmirers
(Definition of nut noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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