vagina /vəˈdʒaɪ.nə/ noun6 •a part inside a woman's body, joining the outer sex opening to the place where a baby grows •A similar organ in some invertebrates and non-mammalian amniotes. •(informal) The vulva, or the vulva and vaginal passage collectively. •(informal, offensive) A coward; a weakling; a pussy. •A sheathlike structure, such as the leaf of a grass that surrounds a stem. •(slang) The anus. formsvaginae · vaginae · vaginas