ˈrüˌgōs, -ōz adjective
Etymology: Latin rugosus wrinkled, from ruga wrinkle + -osus -ose — more at rough
1. : full of wrinkles
rugose cheeks
2. botany : having the veinlets sunken and the spaces between elevated
the rugose leaves of the sage and the horehound
— compare bullate
• ru·gose·ly adverb