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.
1 Foods with soluble fiber include oatmeal, nuts, beans, lentils, apples and blueberries.  Insoluble fiber, which does not dissolve in water, can help food move through your digestive system, promoting regularity and helping prevent constipation. Foods with insoluble fibers include wheat, whole wheat bread, whole grain couscous, brown rice, legumes, carrots, cucumbers and tomatoes.