Source : Webster's Revised Unabridged Dictionary (1913)
Flour \Flour\, n. [F. fleur de farine the flower (i.e., the
best) of meal, cf. Sp. flor de la harina superfine flour,
Icel. fl["u]r 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.
{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 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.