n. A plant of the genus Narcissus. See cut under cyathiform.n. A genus of monocotyledonous plants of the order Amaryllidaceæ and the tribe Amarylleæ, known by its undivided cup-shaped corona.n. In heraldry, a flower composed of six petals, or a sort of hexafoil or architectural ornament of six lobes, used as a bearing.