Ovary \O"va*ry\, n.; pl. {Ovaries}. [NL. ovarium, fr. L. ovum egg: cf. F. ovaire. See {Oval}.] 1. (Bot.) That part of the pistil which contains the seed, and in most flowering plants develops into the fruit. See Illust. of {Flower}. 2. (Zo["o]l. & Anat.) The essential female reproductive organ in which the ova are produced. See Illust. of {Discophora}.