centaury
cen.tau.ry \'sen-.to.r-e-\ n [ME centaure, fr. MF centaure`e, fr. ML centaurea, fr. L ]centaureum, fr. Gk kentaureion, fr. Kentauros 1a: any of a genus (Centaurium) of low herbs of the gentian family; (Xesp : an Old World herb (C. umbellatum) formerly used as a tonic 1b: a related American plant (genus Sabatia) 2: KNAPWEED