English word vulva comes from Proto-Indo-European *welw-, Proto-Indo-European *welH-, and later Latin voluto (I ponder. I roll, turn, twist, or tumble about. I wallow.)
*welw- (Proto-Indo-European)
*welH- (Proto-Indo-European)
voluto (Latin)
I ponder. I roll, turn, twist, or tumble about. I wallow.
volva (Latin)
vulva (English)
(anatomy) The external female sexual organs, collectively.