scarlet_pimpernel
1. [ noun ] (botany) herb with scarlet or white or purple blossoms that close at approach of rainy weather
Synonyms: poor_man's_weatherglass Anagallis_arvensis red_pimpernel
Related terms: pimpernel
Similar spelling:   scarlet_runner
  scarlet_letter
  scarlet_bugler
  scarlet_tanager
  scarlet_lychnis
  scarlet_hamelia
  scarlet_fritillary