01 n. an annual Eurasian plant (Centaurea cyanus) which grows in grain fields; -- called also bachelor's button. It receives its name from its bl…
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1.
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(Bot.) Also: bachelor's button
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2.
A large and troublesome species of blowfly (Musca vomitoria). Its body is steel blue.(Zool.)
Syn.
cornflower, bachelor's button.