τῶν δύο φύσεων → of the vagina and anus;

[spiros]

Not sure why it is spelled without a space: τῶν δύοφ.

VII. sex, θῆλυς φῦσα (prob. for οὖσα) κοὐκ ἀνδρὸς φύσιν S.Tr.1062, cf. OC445, Th.2.45, Pl.Lg.770d, 944d: hence,
2. the characteristic of sex, = αἰδοῖον, Tab.Defix.89a6 (iv b.c.), Nic.Fr.107, D.S.32.10, S.E.M.1.150, etc.: esp. of the female organ, Hp.Mul.2.143, Ant.Lib.41, Artem.5.63, PMag.Osl.1.83, 324, Horap.1.11: pl., τῶν δύοφ., of the vagina and anus, Sch.Ar.Lys.92, cf. PMag.Par.1.318.

— Liddell, H. G., Scott, R., Jones, H. S., & McKenzie, R. (1996). A Greek-English lexicon. "With a revised supplement, 1996." (Rev. and augm. throughout) (1965). Oxford;  New York: Clarendon Press;  Oxford University Press.