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English definition of “winnow”

winnow

verb [T]     /ˈwɪn.əʊ/ US  /-oʊ/
to blow the chaff (= the outer coverings) from grain before it can be used as foodRemoving the skin or seed from fruit and vegetables formal to reduce a large number of people or things to a much smaller number by judging their quality: A list of 15 candidates has been winnowed down to a shortlist of three. a winnowing processBecoming and making smaller or lessBecoming and making less strong
(Definition of winnow verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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