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 pim·per·nel /ˈpɪmpɚ/
 紫繁簍

 Pim·per·nel n.  Bot. A plant of the genus Anagallis, of which one species (Anagallis arvensis) has small flowers, usually scarlet, but sometimes purple, blue, or white, which speedily close at the approach of bad weather.
 Water pimpernel. Bot. See Brookweed.
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 pimpernel
      n 1: European garden herb with purple-tinged flowers and leaves
           that are sometimes used for salads [syn: salad burnet,
            burnet bloodwort, Poterium sanguisorba]
      2: any of several plants of the genus Anagallis