\Mar"i*gold\, 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}.
Note: There are several yellow-flowered plants of different
      genera bearing this name; as, the {African 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} ({C. segetum},
      a pest in the cornfields of Italy); {fig marigold}, of
      the genus {Mesembryanthemum}; {marsh marigold}, of the
      genus {Caltha} ({C. palustris}), commonly known in
      America as the cowslip. See {Marsh Marigold}.
{Marigold window}. (Arch.) See {Rose window}, under {Rose}.