<p><strong>Noun</strong></p><ul><li>Plural: hibiscuses.</li><li>Also called: China rose.</li><li>A woody plant, <em>Hibiscus rosa-sinensis</em>, of the mallow family, having large, showy flowers; the state flower of Hawaii.</li><li>Any of numerous other plants, shrubs, or trees of the genus <em>Hibiscus</em>, characterized by lobate or dentate leaves and usually profusely blooming flowers.</li></ul>