Flour is defined as a fine powder or meal made from ground grain, roots, nuts and vegetables.(noun)
A fine powder used to make cakes and cookies and made from ground wheat is an example of flour.
To flour means to sprinkle a thin powder (also called flour) onto a surface in order to prepare that surface and prevent sticking.(verb)
When you are making bread and you do not want it to stick to the counter, you spread a thin powder (made from ground grain) onto the counter; this act of spreading the powder is an example of how to flour the surface.
See flour in Webster's New World College Dictionary
Origin: ME (see flower): a fig. use as “best, prime” in “flour of wheat,” after Fr fleur de farine, lit., flower of meal
See flour in American Heritage Dictionary 4
Origin: Middle English, flower, best of anything, flour; see flower.
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