资料来源 : WordNet®

rosebay willowherb
     n : 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 [syn: {fireweed},
          {giant willowherb}, {wickup}, {Epilobium angustifolium}]