winnow

noun

1
blow away or off with a current of air
winnow chaff
2
select desirable parts from a group or list
cull out the interesting letters from the poet's correspondence
winnow the finalists from the long list of applicants
3
separate the chaff from by using air currents
She stood there winnowing chaff all day in the field
4
blow on
The wind was winnowing her hair
the wind winnowed the grass

Also useful for “winnow”:Unscrambler— Rearrange the letters in “winnow”