Rock"rose` (?), n. Bot.
A name given to any species of the genus Helianthemum, low shrubs or herbs with yellow flowers, especially the European H. vulgare and the American frostweed, H. Canadense.
Cretan rockrose, a related shrub (Cistus Creticus), one of the plants yielding the fragrant gum called ladanum.
© Webster 1913.