'Bluebottle' definitions:

Definition of 'bluebottle'

(from WordNet)
noun
An annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers [syn: cornflower, bachelor's button, bluebottle, Centaurea cyanus]
noun
Blowfly with iridescent blue body; makes a loud buzzing noise in flight [syn: bluebottle, Calliphora vicina]

Definition of 'Bluebottle'

From: GCIDE
  • 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]