any of a genus (Calendula) of plants of the composite family, with yellow or orange flowers, esp. the pot marigold
See calendula in American Heritage Dictionary 4
(kə-lĕnˈjə-lə)
noun
A Mediterranean annual plant (Calendula officinalis) in the composite family, widely cultivated for its showy, yellow or orange, rayed flower heads that were formerly used in medicine, coloring, and flavoring of food. Also called pot marigold.