chaffweed
[ˈtʃafwiːd]noun
[mass noun]a tiny European pimpernel with pink or white flowers
秣草Anagallis minima, family Primulaceae
拉丁名Anagallis minima，报春花科
语源mid 16th cent.: probably from the verb chafe + weed
语源mid 16th cent.: probably from the verb chafe + weed