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English definition of “walnut”

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walnut

noun [C or U] uk   /ˈwɔːl.nʌt/ us    /ˈwɑːl-/
a nut with a slightly bitter taste and a series of folds in it and a hard shell, or (the expensive, light brown wood from) the tree that produces these nuts
(Definition of walnut from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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