Lexical Definition

‎-πω‎ -pō (po) somehow ^G:PRT
another form of the base of ‎-πώς‎

• an enclitic particle of indefiniteness
• yet, even
• used only in the comparative. See ‎μηδέπω‎, ‎μήπω‎, ‎οὐδέπω‎, ‎οὔπω‎, ‎πώποτε‎.

Abbott-Smith

πω, enclit. part.,
yet, v.s. μή-πω, μηδέ-πω, οὔ-πω, οὐδέ-πω, πώ-ποτε.

Liddell-Scott-Jones

form of: -πώς

πω,

Ionic dialect κω, enclitic Particle, up to this time, yet, in early Epic dialect always with a negative, with which it sometimes forms one word, compare οὔπω, μήπω, etc.; sometimes a word is interposed, οὐδ᾽ ἄρα πώ τι ᾔδεε [πω.. λυώμεθα.. ἵππους 23.7, compare 4th-5th c.BC: Aeschylus Tragicus “Prometheus Vinctus” 27, 511, 5th c.BC: Sophocles Tragicus “Oedipus Tyrannus” 105, “Tr.” 591, 1061, etc.; μὴ συναλλάξαντά πω [prev. author] “OT” 1110. ">Refs 8th c.BC+]

__II at all, with negative in Epic dialect, οὐδέ τί πω ἴδμεν (που [πω τλήσομ᾽ 3.306; μὴ δή πω χάζεσθε 15.426: after 8th c.BC: Homerus Epicus sometimes with questions which imply a negative, ἢ ξυναλλάξας τί π; 5th c.BC: Sophocles Tragicus “Oedipus Tyrannus” 1130 ">Refs 8th c.BC+] (variant που); πόλις ἀφισταμένη τίς πω τούτῳ ἐπεχείρησ; has ever a city meditating revolt..? [Refs 5th c.BC+]