πεῖ

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.