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.
The best cereal I found that helped with my constipation much better than raisin bran is Uncle Sam's. This is a cereal that contains whole flaxseed which is a natural laxative and flakes are made from the whole wheat bran flattened.