ἐγκολπισμός
From LSJ
τὸ γὰρ βραχύ τι τοῦτο πᾶσαν ὑμῶν ἔχει τὴν βεβαίωσιν καὶ πεῖραν τῆς γνώμης → this trifle contains the whole seal and trial of your resolution
English (LSJ)
ὁ, A vaginal douche or clyster, Aët.3.153.
Spanish (DGE)
-οῦ, ὁ
clister, lavativa vaginal Aët.3.153, Steph.in Hp.Aph.3.136.15.