'Chrysanthemum segetum' definitions:

Definition of 'Chrysanthemum segetum'

noun

European herb with bright yellow flowers; a common weed in grain fields [syn: corn marigold, field marigold, Chrysanthemum segetum]

From: GCIDE

Marigold \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. [1913 Webster]
Note: 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]

From: GCIDE

Goldin \Gold"in\, Golding \Gold"ing\, n. (Bot.) [From the golden color of the blossoms.] A conspicuous yellow flower, commonly the corn marigold (Chrysanthemum segetum). [This word is variously corrupted into gouland, gools, gowan, etc.] [1913 Webster]