Definition: Meaning of, rosebay willowherb in English to English dictionary.
Pronunciation:/ ˈrəʊzbeɪ ˈwɪləʊhəːb /
noun
synonym
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rosebay willowherb
rosebay willowherbs
tall North American perennial with creeping rootstocks and narrow leaves and spikes of pinkish-purple flowers occurring in great abundance in burned-over areas or recent clearings; an important honey plant