bluebonnet

/B L UW1 B AA0 N AH0 T/
noun
  1. 1

    A traditional flat Scottish hat made of blue wool; a blue tam-o'-shanter.

  2. 2

    Someone who wears such a hat; a Scotsman, especially a Scottish soldier.

  3. 3

    Any of several blue flowering plants, especially cornflower, Centaurea cyanus, and plants of the genus Scabiosa.

  4. 4

    A blue Australian parrot, especially Northiella haematogaster.

  5. 5

    Any of several North American species of Lupinus common in the southwestern US, especially Lupinus texensis and Lupinus subcarnosus.

Source: https://en.wiktionary.org/wiki/blue%20bonnet, https://en.wiktionary.org/wiki/bluebonnet