Any of several blue flowering plants, especially cornflower, Centaurea cyanus, and plants of the genus Scabiosa.
A blue Australian parrot, especially Northiella haematogaster.
A traditional flat Scottish hat made of blue wool; a blue tam-o'-shanter.
Someone who wears such a hat; a Scotsman, especially a Scottish soldier.
Any of several North American species of Lupinus common in the southwestern US, especially Lupinus texensis and Lupinus subcarnosus.
A cornflower, a plant that grows in grain fields, Centaurea cyanus, with blue flowers resembling bottles.
Any of various large papilionid butterflies of the genus Graphium, also called triangles, etc.
Any of various blowflies of the genus Calliphora that have an iridescent metallic-blue body and make a loud buzzing noise when flying.
A blue ant, Diamma bicolor, a parasitic wasp native to Australia.
A police officer.
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.