: mostly indigestible material in food (such as legumes, whole grains, and vegetables) that promotes elimination of waste from the large intestine : fiber 1d
: food containing much indigestible material acting as fiber
- Knowing where to get dietary fiber is important because strong evidence now links roughage to good health, weight management and a reduced risk of colon cancer and other major diseases.
- —Elizabeth Somer
- That's okay, though: Junk food has a place in a moviegoing diet, as long as you make room for roughage elsewhere.
- —Ty Burr