American English

Definition of winnow out phrasal verb from the Oxford Advanced American Dictionary

 

winnow out

 phrasal verb
phrasal verb
 
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Phrasal Verbs

winnow somebody/something out (of something)

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winnow (somebody/something) down

(formal)
 
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to remove people or things from a group so that only the best ones are left synonym sift
See the Oxford Advanced Learner's Dictionary entry: winnow out