bluebottle

noun7

1. •
   Any of various blowflies of the genus Calliphora that have an iridescent metallic-blue body and make a loud buzzing noise when flying.

   • The incredibly long body as well as the extended wings were of a gleaming purplish-gray colour: I can only liken it to that of a meat fly or common "bluebottle". — 1930
2. •
   A marine jellyfish of the genus Physalia, which includes Physalia physalis, the Portuguese man-of-war, and Physalia utriculus, the Pacific man-of-war; a man-of-war.
3. •
   (slang, disapproving) A police officer.

   • I will have you as soundly swing’d for this, you bluebottle rogue! — 1596
4. •
   A cornflower, a plant that grows in grain fields, Centaurea cyanus.
5. •
   Any of various large papilionid butterflies of the genus Graphium, also called triangles, etc.
6. •
   A blue ant, Diamma bicolor, a parasitic wasp native to Australia.
7. •
   (disapproving, no longer used) A bluestocking.

   • To-morrow there is a party of purple at the “blue” Miss Berry’s. Shall I go? um! — I don’t much affect your blue-bottles ; — but one ought to be civil. — 1813