名詞 cornflower:

1. plant of southern and southeastern United States grown for its yellow flowers that can be dried
   同義詞：strawflower, Uvularia grandiflora
2. an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers
   同義詞：bachelor's button, bluebottle, Centaurea cyanus

corn.flow.er

n.（名詞）
An annual Eurasian plant(Centaurea cyanus) in the composite family, cultivated and also naturalized in North America and having showy heads of blue, purple, pink, or white flowers. Also called bachelor`s button
矢車菊：一種亞歐大陸的菊科一年生植物（矢車菊屬矢車菊） ，北美也有種植且適應(yīng)了的，花冠絢麗，有藍、紫、粉紅或白色花 也作 bachelor`s button

來源：
[So called because it is found in cornfields]
[因在谷物田里發(fā)現(xiàn)而被命名]