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English Wikipedia has an article on:
Bluebottle (marine jelly of the genus Physalia) washed ashore at Batemans Bay, New South Wales, Australia


  • blue +‎ bottle From resemblance to shiny colored-glass bottles.
  • (police officer): From the colour of the uniform.


  • (file)


bluebottle (plural bluebottles)

  1. Any of various blowflies of the genus Calliphora that have an iridescent metallic-blue body and make a loud buzzing noise when flying.
    • 1930, Sax Rohmer, The Day the World Ended, published 1969, page i. 16:
      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".
  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. A cornflower, a plant that grows in grain fields, Centaurea cyanus, with blue flowers resembling bottles.
  4. A blue ant, Diamma bicolor, a parasitic wasp native to Australia.
  5. Any of various large papilionid butterflies of the genus Graphium, also called triangles, etc.
  6. (UK, Australia, Ireland, slang, derogatory) A police officer.
    • 1882, Henry Herman, Henry Arthur Jones, The Silver King:
      COOMBE: He got the clinch only last week — eighteen months. You see it's no good having anybody here as ain't got a unblemished character. We don't want to have the bluebottles come sniffing round here, do we?


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