cloven, adj. — Green’s Dictionary of Slang

cloven adj.

also cleave, cleft

[SE cloven, split; note cleave v.]

used to describe a woman, usu. a prostitute, who poses as a virgin but, in reality, is not.

1700		T. Brown Amusements Serious and Comical in Works (1927) 87: [of a barmaid] That shining lamp of cloven mortality.
1725		New Canting Dict. n.p.: cloven, cleave, or cleft used in a Canting Sense, to denote a young Woman who passes for a Maid, and is not one.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. 1725].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue n.p.: Cloven, Cleave, or Cleft, a term used for a woman who passes for a maid, but is not one.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

SE in slang uses

In compounds

cloven spot (n.) [one of a number of synon. coined by John Cleland for his 1749 novel Memoirs of a Woman of Pleasure (‘Fanny Hill’), a pornographic work, paradoxically without obscenities]

the vagina.

a.1690		song in Academy of Compliments (1705) in Williams Dict. Sexual Lang. I 250: The Lover Courts to gain the Cloven Spot.
1748–49		Cleland Memoirs of a Woman of Pleasure (1985) 68: Coming out with his drawn weapon, [he] stuck it in the cloven spot.
1890–1904		Farmer & Henley Sl. and Its Analogues.