Green’s Dictionary of Slang

(UK black) the crotch; the genitals.

1961		(con. early 1950s) J. Peacock Valhalla 81: Letting the panties fall imperviously, exposing the pulsing V, almost hairless, thoroughly Oriental.
1977		P. Hamill Flesh and Blood (1978) 40: With beads of water in the black curly V.
1992		A. Duff One Night Out Stealing 72: Jube’d seen their fannies. or why else’d he cried, Lookit the vees! Hey, it’s a cunt.
1999		(con. 1979–80) A. Wheatle Brixton Rock (2004) 174: Think about the seriously shaped legback around your V, man.