Other forms: flours
Flour is the fine powder ground from grain that bread and cakes start as. Wheat, mostly, with the grain crushed to dust.
The types are worth knowing, since plain flour has no raising agent, self-raising has one mixed in, and strong flour has more protein for bread. Wholemeal keeps the whole grain. It is a mass noun. The word is spelled almost like flower and sounds identical, which is no accident, since both come from the idea of the finest part of something.
1nounflourA fine powder made by grinding grain, used in baking.
“She weighed out the flour and the sugar.”
Patterna bag / cup of flour · plain / self-raising / wholemeal flour · dust with flour · flour and water
Flour and flower were once one word: flour was the flower of the grain — the finest, whitest part, kept for bread.
hooks ontoflower
Proto-Indo-European
*bʰleh₃-
English, today
flour
Spelled (until about 1830) and meaning flower in the sense of flour being the "finest portion of ground grain" (compare French fleur de farine, fine fleur). a doublet of fleur and flor and flower. Partially displaced native meal. The U.S. standard of identity comes from [https://web.archive.org/web/20100722051913/http://www.access.gpo.gov/nara/cfr/waisidx_02/21cfr137_02.html 21CFR137.105].
Etymology from Wiktionary, CC BY-SA