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 For constipation: 20 to 25 grams of wheat bran per day. It appears that 40 grams per day is no more effective than 20 grams per day.  For the treatment of irritable bowel syndrome (IBS): 30 grams of wheat bran per day for up to 12 weeks.