What is "bachelor's button"

Bluebottle \Blue"bot`tle\, blue-bottle \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. (Zo["o]l.) A large and troublesome species of blowfly ( Musca vomitoria). Its body is steel blue.

alt. 1 Any one of a number of plants with daisylike, button shaped flowers of the genus ''Centaurea'', especially the species ''Centaurea cyanus''. 2 A button which may be attached to clothing without resorting to needle and thread. n. 1 Any one of a number of plants with daisylike, button shaped flowers of the genus ''Centaurea'', especially the species ''Centaurea cyanus''. 2 A button which may be attached to clothing without resorting to needle and thread.

1. n: an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers [syn: cornflower, bluebottle, Centaurea cyanus]

2. tropical American herb having rose to red or purple flowers that can be dried without losing color [syn: globe amaranth, Gomphrena globosa]