1. twining plant of Asia Minor having cream-colored to purple flowers and long thick roots yielding a cathartic resin • Syn: Convolvulus scammonia • Hypernyms: convolvulus 2. tropical American morning glory • Syn: Ipomoea orizabensis • Hypernyms: morning glory 3. resin from the root of Convolvulus scammonia • Hypernyms: natural resin