Etymology From Middle English bran, branne, bren, from Old French bren, bran (“bran, filth”), from Gaulish brennos (“rotten”), from Proto-Celtic *bragnos (“rotten, foul”) (compare Welsh braen (“stench”), Irish bréan (“rancid”), Walloon brin (“excrement”)), from Proto-Indo-European *bʰreHg- (compare Latin fragrāre (“to smell strongly”), Dutch brak (“hound”)).
1
The broken coat of the seed of wheat, rye, or other cereal grain, separated from the flour or meal by sifting or bolting; the coarse, chaffy part of ground grain.
Etymology From Middle English bran, branne, bren, from Old French bren, bran (“bran, filth”), from Gaulish brennos (“rotten”), from Proto-Celtic *bragnos (“rotten, foul”) (compare Welsh braen (“stench”), Irish bréan (“rancid”), Walloon brin (“excrement”)), from Proto-Indo-European *bʰreHg- (compare Latin fragrāre (“to smell strongly”), Dutch brak (“hound”)).
1
To clean (metal) using a branner.
bran
noun
Etymology From a Celtic source; compare Welsh brân and Cornish bran.