| Noun | 1. man-of-the-earth - a morning glory with long roots of western United StatesIpomoea leptophyllamorning glory - any of various twining vines having funnel-shaped flowers that close late in the day | | 2. man-of-the-earth - tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; sometimes held to be source of the sweet potatoIpomoea fastigiata, Ipomoea panurata, manroot, scammonyroot, wild potato vine, wild sweet potato vinemorning glory - any of various twining vines having funnel-shaped flowers that close late in the day |