any of a genus (Centaurium) of small plants of the gentian family, with flat clusters of red or rose flowers
See centaury in American Heritage Dictionary 4
(sĕnˈtôrˌē)
nounpl.cen·tau·ries
Any of several herbs of the genus Centaurium, especially a Eurasian species (C. erythraea) that has clusters of pink flowers and has long been used in herbal medicine.