Pronunciation: (hī-bis'kus, hi-),[key] —n., —pl.-cus•es. 1. Also called China rose. a woody plant, Hibiscus rosa-sinensis, of the mallow family, having large, showy flowers: the state flower of Hawaii.
2. any of numerous other plants, shrubs, or trees of the genus Hibiscus, characterized by lobate or dentate leaves and usually profusely blooming flowers.