Bĕl/la-dŏn/nă, n.

n. [It., prop. fine lady, from bello, bella, beautiful, and donna, lady, Lat. domina.] (Bot.) (a.) A species of the genus Atropa, formerly employed as a cosmetic; deadly night-shade. (b.) A species of Amaryllis (A. belladonna); the belladonna lily. London.