Definitions from Wiktionary ( )

▸ verb:  (transitive, agriculture, literal) To subject (granular material, especially food grain) to a current of air separating heavier and lighter components, as grain from chaff.
▸ verb:  (transitive, figuratively) To separate, sift, analyse, or test by separating items having different values.
▸ verb:  (transitive, literary) To blow upon or toss about by blowing; to set in motion as with a fan or wings.
▸ verb:  (intransitive, literary, dated) To move about with a flapping motion, as of wings; to flutter.
▸ noun:  That which winnows or which is used in winnowing; a contrivance for fanning or winnowing grain.
▸ noun:  The act of winnowing






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