Rhododendron \Rho`do*den"dron\, n. [L., fr. Gr. "rodo`dendron, literally, rose tree; "ro`don rose + de`ndron tree. See Rose.]

(Bot.) A genus of shrubs or small trees, often having handsome evergreen leaves, and remarkable for the beauty of their flowers; rosebay.

Source: Webster's Revised Unabridged Dictionary (1913)