bran /ˈbɹæn/noun 2verb 1forms 3phrases 1 noun2 •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. •The European carrion crow. verb1 •To clean (metal) using a branner. formsbranned · branning · brans Phrases with bran bolt to the branTo examine thoroughly, so as to separate or discover everything important.