corn·flow·er /ˈkɔrnˌflaʊ(ə)r/
  矢車菊
  Corn·flow·er n. Bot. A conspicuous wild flower (Centaurea Cyanus), growing in grainfields.
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  cornflower
       n 1: plant of southern and southeastern United States grown for
            its yellow flowers that can be dried [syn: strawflower,
             Uvularia grandiflora]
       2: an annual Eurasian plant cultivated in North America having
          showy heads of blue or purple or pink or white flowers
          [syn: bachelor's button, bluebottle, Centaurea cyanus]