Definition of All-Bran™ noun from the Oxford Advanced Learner's Dictionary

 

All-Bran™

 noun
noun
BrE
 
; NAmE
 
[uncountable]
 
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a breakfast food made mainly of bran (= the outer skin of grain such as wheat, oats, etc.), which helps to make the bowels work properly. It is usually eaten with milk and sugar.