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