n.
Pronunciation: ' ko ̇ st- ˌ mer- ē , ' käst-
Function: noun
Inflected Form: plural -mar · ies
Etymology: Middle English costmarie, from coste costmary (fr. Old English cost, from Latin costum, from Greek kostos, a fragrant root) + Marie the Virgin Mary
Date: 14th century
: an aromatic composite Eurasian herb ( Chrysanthemum balsamita syn. Tanacetum balsamita ) having leaves used as a potherb and in flavoring