any herbaceous perennial plant of the genus Circaea, in the evening primrose family (Onagraceae), that occurs in damp woodlands of the Northern ... [1 related articles]
[n] - any of several erect perennial rhizomatous herbs of the genus Circaea having white flowers that open at dawn
noun any of several erect perennial rhizomatous herbs of the genus Circaea having white flowers that open at dawn; northern hemisphere
any of several plants belonging to the genus Circaea, of the evening primrose family, of cool and temperate regions of the Northern Hemisphere, having white flowers.