Full Definition of FEMALE. 1. a: a female person: a woman or a girl b: an individual that bears young or produces large usually immobile gametes (as eggs) that are fertilized by small usually motile gametes of a male. 2.: a pistillate plant. female. noun. : a woman or a girl: a female person. : an animal that can produce young or lay eggs: a female animal. : a plant that can produce seed or fruit: a female plant.