rhododendron

noun

Etymology: The obsolete sense derives from Latin rhododendron (“oleander”), from Ancient Greek ῥοδόδενδρον (rhodódendron, “oleander”), from ῥόδον (rhódon, “rose”) + δένδρον (déndron, “tree”). The modern sense comes through the intermediary of the genus name Rhododendron, not closely related taxonomically, but with similar flowers to those of oleander.

1. Oleander (Nerium oleander).
2. Any of various flowering shrubs in the genus Rhododendron, especially
3. Any of various flowering shrubs in the genus Rhododendron, especially