Green’s Dictionary of Slang

centre of attraction n.

the vagina.

[1680		M. Stevenson Wits Paraphras’d 128: Know’st thou not yet the many dangers / In unknown Pools do happen Strangers? / The Fire-Ships flaming in the center].
[1724		Swift ‘His Grace’s Answer’ in A. Carpenter Verse in Eng. in 18C Ireland (1998) 152: And strive, and strive, your Wife to please, / In her you’ll center all your Joys, / And get Ten thousand Girls and Boys].
1732-1820		Order of the Beggar's Benison and Merryland (1892) 75: The bird within, the bush without; Attraction’s lovely centre.
1748–49		Cleland Memoirs of a Woman of Pleasure (1985) 39: My petty-coats and shift were soon taken up, and their stronger center of attraction soon laid open.
1784		Rambler’s Mag. May 163/1: A whole convocation of [ants] crept up the pillars of the Cytheran temple [...] Their numbers rather increased, drawn up by the central attraction.
c.1850		Peeping Tom 1 2/2: In spite of every effort to conceal the precious labyrinth, that poor little centre could not but be fully exposed.
1890–1904		Farmer & Henley Sl. and Its Analogues.
1902		D. St John Memoirs of Madge Buford 52: I pointed [‘Ralph’s rooser’] at her centre of attraction and gave myself up to [...] their lusty working bung and spigot.