πεῖ
From LSJ
διὸ καὶ μεταλάττουσι τὴν φυσικὴν χρῆσιν εἰς τὴν παρὰ φύσιν αἱ δοκοῦσαι παρθένοι τῶν εἰδώλων → therefore those professing to be virgins of the idols even change the natural use into the unnatural (Origen, commentary on Romans 1:26)
English (LSJ)
τό, name of the letter π,
A v. Π :—later πῖ, Sch.D.T.p.489 H., etc.
πεῖ, Dor. Adv.
A where? Sophr.5 :—indef. πει, anywhere, SIG527.126 (Dreros, iii B. C.).
German (Pape)
[Seite 543] dor. statt πῆ u. ποῦ, Ar. Ach. 860.
Greek (Liddell-Scott)
πεῖ: Δωρ. ἀντὶ πῆ ἢ ποῦ, ὡς εἷ ἀντὶ ᾗ, ἢ οὗ, Ahrens D. Dor. 361 κἑξ.
Dutch (Woordenboekgrieks.nl)
πεῖ, τό indecl. pi (zestiende letter van het Griekse alfabet, zie Π, π ).
πεῖ, Dor. interrog. adv. waar:. ἁ κλᾲξ τᾶς μεγάλας πεῖ λάρνακος; waar is de sleutel van de grote kist? Theocr. Id. 15.33.