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1. Separate the chaff from by using air currents
   "She stood there winnowing chaff all day in the field"
   - fan
    
2. Blow on
   "The wind was winnowing her hair"; "the wind winnowed the grass"
    
3. Select desirable parts from a group or list
   "winnow the finalists from the long list of applicants"
   - cull out
    
4. Blow away or off with a current of air
   "winnow chaff"

1. The act of separating grain from chaff
   - winnowing, sifting

Derived forms: winnowing, winnowed, winnows

Type of: choose, fan, pick out, remove, select, separation, sieve, sift, strain, take, take away, withdraw

Encyclopedia: Winnow