n. [ Mary + gold. ] (Bot.) A name for several plants with golden yellow blossoms, especially the Calendula officinalis (see Calendula), and the cultivated species of Tagetes. [ 1913 Webster ]

☞ There are several yellow-flowered plants of different genera bearing this name; as, the African marigold or French marigold of the genus Tagetes, of which several species and many varieties are found in gardens. They are mostly strong-smelling herbs from South America and Mexico: bur marigold, of the genus Bidens; corn marigold, of the genus Chrysanthemum (Chrysanthemum segetum, a pest in the cornfields of Italy); fig marigold, of the genus Mesembryanthemum; marsh marigold, of the genus Caltha (Caltha palustris), commonly known in America as the cowslip. See Marsh Marigold. [ 1913 Webster ]

Marigold window. (Arch.) See Rose window, under Rose. [ 1913 Webster ]