1. a. Of or denoting the sex that produces ova or bears young. b. Characteristic of or appropriate to this sex; feminine. c. Consisting of members of this sex. See Usage Note at lady. 2. Botany a. Designating an organ, such as a pistil or ovary, that functions in producing seeds after fertilization. b. Bearing pistils but not stamens; pistillate: female flowers. 3. Having a recessed part, such as a slot or receptacle, designed to receive a complementary male part: the female section of an electrical outlet. n. 1. A member of the sex that produces ova or bears young. 2. A woman or girl. 3. Botany A plant having only pistillate flowers.