Webster's Revised Unabridged Dictionary · 1913

Vulva

Vulva , noun

[Latin vulva, volva, from volvere to roll.]

1.
(Anatomy) The external parts of the female genital organs; sometimes, the opening between the projecting parts of the external organs.
2.
(Zoology) The orifice of the oviduct of an insect or other invertebrate.