Definition of rosebay in English:

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Pronunciation: /ˈrəʊzbeɪ/


1 (also rosebay willowherb) A tall willowherb with pink flowers, native to north temperate regions and often spreading on burnt ground.
  • Epilobium (or Chamaenerion) angustifolium, family Onagraceae
Example sentences
  • This is a white form of our old enemy the rosebay willowherb, but once you have seen it growing in a border backed by dark hedging you will forget all about its evil relatives.
  • There's the winter debris of the summer's plants, especially the strong gaunt stands of thistles, frizzy wands of rosebay willowherb, and upturned umbrellas of umbelliferae.
  • It was however simply a plumed seed of rosebay willowherb whose offspring in a late summer breeze swirl through the air like snow in winter.
2North American A rhododendron.
  • Genus Rhododendron, family Ericaceae: several species, in particular Lapland rosebay (R. lapponicum), a dwarf shrub of northern latitudes
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