Green’s Dictionary of Slang

the vagina; also attrib.

1890		‘Neaniskos’ Priapeia Ep. xxviii 28: Display to me your balls in all openess, I must call a tool a tool, a coynte a coynte.
1896		‘Voluptuous Night’ in Cabinet of Venus 10: All glorious Coynte! through every age and clime, / Thou reignest omnipotent.
1890–1904		Farmer & Henley Sl. and Its Analogues.
1927		‘J.M. Hall’ Anecdota Americana I 62: He discovered one day that his star had been selling her coynte (to use Burton’s elegantism), at a hundred dollars a screw.
1934		‘J.M. Hall’ Anecdota Americana II 97: C stands for Coint-juice / That nectarine flow.