1. (

• costmary ,
• alecost ,
• bible_leaf ,
• mint_geranium ,
• balsam_herb ,
• Tanacetum_balsamita ,
• Chrysanthemum_balsamita

) tansy-scented Eurasian perennial herb with buttonlike yellow flowers; used as potherb or salad green and sometimes for potpourri or tea or flavoring; sometimes placed in genus Chrysanthemum ;