bluet

noun5

1. •
   Any of several different plants, from several genera, having bluish flowers.

   • My breathing shakes the bluet like a breeze …. — 1913
2. •
   Centaurea, a plant genus in the family Asteraceae
3. •
   Several plant genera in the family Rubiaceae, notably Houstonia and Oldenlandiopsis.
4. •
   Any of several small damselfly species, including the genera Coenagrion and Enallagma.
5. •
   (historical) A kind of blue woolen cloth.

   • For the Feast of the Assumption, cloth of bluet and of rayed (i.e., striped) scarlet was bought for the robes of the Prince [Edward] and Sir John de Bretagne. — 1899