Definition of American centaury in English:

American centaury

noun

  • Any plant of the genus Sabatia (family Gentianaceae), comprising herbaceous plants of North America and the West Indies, typically having pink flowers; especially S. angularis; (in later use also) any North American species of the genus Centaurium.

Origin

Early 19th century; earliest use found in Benjamin Barton (1766–1815).