Longman Dictionary of Contemporary English
Wiktionary
n. 1 refine flour made solely of the endosperm of the grain, i.e. without germ and bran, often chemically whitened. 2 (context US standard of identity English) (form of exact synonym flour English)
Usage examples of "white flour".
It was the Dufur White Flour Mill, which operated from 1872 through the 1930s, using millstones that had come around the Cape of Good Hope in 1870.
The miller, the twenty-pound sack of white flour, and the miller's family were allowed to board a torpedo boat.
Did you know that brown flour with the bran still on it is better for you than white flour?
You couldnt buy flour, white flour, any more without taking four times the quantity of brown flour.
Those who could afford it ate bread and biscuits made with white flour and made mash for the chickens with the brown.
Forsythe, naked and half covered with the white flour that had spilled out of the barrels.
Or a Mason's Bap, that was my Dad's own specialty, baked upon the bottom of the Oven, white Flour in clouds, he'd sell 'em whole, or by the Slice.