Rŏck'-rōse, n.

n. (Bot.) (a.) A plant of the genus Cistus, found on the coasts of the Mediterranean in both Europe and Africa. C. Cretica (the Cretan rock-rose) affords the fragrant gum known as ladanum, or labdanum. (b.) A plant of the genus Helianthemum. H. vulgare, the yellow cistus, is a common native plant in Great Britain, adorning gravelly and rocky banks with its bright blossoms, and is peculiar for the irritability of its stamens. Baird.