Webster's Revised Unabridged Dictionary · 1913

Flour

Flour (flour) , noun

[French fleur de farine the flower (i.e., the best) of meal, compare Sp. flor de la harina superfine flour, Icelandic flur flower, flour. See Flower.]

The finely ground meal of wheat, or of any other grain; especially, the finer part of meal separated by bolting; hence, the fine and soft powder of any substance; as, flour of emery; flour of mustard.
Collocations (5)
Flour bolt , in milling, a gauze-covered, revolving, cylindrical frame or reel, for sifting the flour from the refuse contained in the meal yielded by the stones.
Flour box , a tin box for scattering flour; a dredging box.
Flour dredge or Flour dredger , a flour box.
Flour dresser , a mashine for sorting and distributing flour according to grades of fineness.
Flour mill , a mill for grinding and sifting flour.

Flour , transitive verb

1.
To grind and bolt; to convert into flour; as, to flour wheat.
2.
To sprinkle with flour.