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 blue·bot·tle /ˈbluˌbɑtḷ/
 矢車菊,青蠅

 blue·bot·tle /ˈbluˌbɑtḷ/ 名詞
 綠頭蠅

 Blue·bot·tle, blue-bottle n.
 1. Bot. an annual Eurasian plant (Centaurea cyanus) which grows in grain fields; -- called also bachelor's button. It receives its name from its blue bottle-shaped flowers.  Varieties cultivated in North America have showy heads of blue or purple or pink or white flowers
 Syn: -- cornflower, bachelor's button.
 2. Zool. A large and troublesome species of blowfly (Musca vomitoria). Its body is steel blue.
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 bluebottle
      n 1: an annual Eurasian plant cultivated in North America having
           showy heads of blue or purple or pink or white flowers
           [syn: cornflower, bachelor's button, Centaurea
           cyanus]
      2: blowfly with iridescent blue body; makes a loud buzzing
         noise in flight [syn: Calliphora vicina]