from
The Collaborative International Dictionary of English v.0.48
Bachelor's button \Bach"e*lor's but"ton\, (Bot.)
A plant with flowers shaped like buttons; especially, several
species of {Ranunculus}, and the cornflower ({Centaurea
cyanus}) and globe amaranth ({Gomphrena}).
[1913 Webster]
Note: Bachelor's buttons, a name given to several flowers
"from their similitude to the jagged cloathe buttons,
anciently worne in this kingdom," according to
Johnson's --Gerarde, p. 472 (1633); but by other
writers ascribed to "a habit of country fellows to
carry them in their pockets to divine their success
with their sweethearts." --Dr. Prior.
[1913 Webster]
from
The Collaborative International Dictionary of English v.0.48
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.
[1913 Webster + WordNet 1.5]
2. (Zool.) A large and troublesome species of blowfly ({Musca
vomitoria}). Its body is steel blue.
[1913 Webster]