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Definition of Roughage
1. Noun. Coarse, indigestible plant food low in nutrients; its bulk stimulates intestinal peristalsis.
Definition of Roughage
1. coarse, bulky food [n -S]
Medical Definition of Roughage
1. 1. Anything in the diet, e.g., bran, serving as a bulk stimulant of intestinal peristalsis. 2. Hay or other coarse feed fed to cattle and other herbivores. (05 Mar 2000)