πῦς
From LSJ
διὸ πᾶσαι αἱ τέχναι καὶ αἱ ποιητικαὶ ἐπιστῆμαι δυνάμεις εἰσίν → hence all arts, i.e. the productive sciences, are potencies
English (LSJ)
Dor. for ποῖ, Sophr.75, prob. in Id.5.
German (Pape)
[Seite 826] adv., dor. statt ποῖ, Sophron bei Ammon.
Greek (Liddell-Scott)
πῦς: Δωρικ. ἀντὶ τοῦ ποῖ, Ἀμμών. 121· ὁ Ahrens D. Dor. 361 ἀναγινώσκει ποῖς.