8. to curve in the form of a vault.. a space, chamber, or passage enclosed by a vault or vaultlike structure, esp. one located underground. 3. a room or compartment for the safekeeping of valuables.
Wheat bran is mostly used to treat and prevent constipation because it provides 6 g of dietary fiber per quarter cup. Wheat bran is primarily insoluble fiber, which helps provide bulk to your stool and can help you pass stool faster. Unlike soluble fiber, wheat bran does not absorb water during digestion but instead remains undigested, helping to move the stool along the digestive wall faster.
You can get more fiber from bran (especially wheat bran), beans and legumes, and fruits and vegetables. Eating more fruits and vegetables is particularly efficient, because they are high in both fiber and fluids. Low-carb dieters often have quite a bit of difficulty with constipation, by the way.