rosebay Meaning, Definition & Usage

  1. noun late-spring-blooming rhododendron of eastern North America having rosy to pink-purple flowers
    Rhododendron maxima.

WordNet

Rose"bay` noun
Definitions
  1. (Bot.) (a) the oleander. Obs. (b) Any shrub of the genus Rhododendron. U.S. (c) An herb (Epilobium spicatum) with showy purple flowers, common in Europe and North America; -- called also great willow herb.

Webster 1913