rough ‧ age /ˈrʌfɪdʒ/ BrE AmE noun [uncountable]
[ Word Family: noun : ↑ rough , the rough, ↑ roughage , ↑ roughness ; verb : ↑ rough , ↑ roughen ; adverb : ↑ rough , ↑ roughly ; adjective : ↑ rough ]
a substance contained in some vegetables, fruits, and grains that helps your ↑ bowel s to work SYN fibre