Sūn'flow-er, n.

n. A plant of the genus Helianthus; — so called from the form and color of its flower, which is a large disk with yellow rays, or from its habit of turning to the sun. The bastard sunflower is of the genus Helenium; the dwarf sunflower is of the genus Rudbeckia, and also of the genus Tetragonotheca; the little sunflower is of the genus Cistus.