any of several rhododendrons, as the great laurel of eastern North America or Rhododendron macrophyllum, of the west coast of North America.
British. the willow herb, Epilobium angustifolium.
(US) any of several rhododendrons, esp Rhododendron maximum of E North America
rosebay willowherb, a perennial onagraceous plant, Chamerion (formerly Epilobium) angustifolium, that has spikes of deep pink flowers and is widespread in open places throughout N temperate regions
another name for oleander


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