TANSY

[tan.sy] n, pl tansies [ME tanesey, fr. MF tanesie, fr. ML athanasia, fr. Gk, immortality, fr. athanatos immortal, fr. a- + thanatos death--more at thanatos] (15c): a common aromatic Old World composite herb (Tanacetum vulgare) that is naturalized in No. America and has bitter-tasting finely divided leaves; broadly: a plant of the same genus