The headword -- perhaps extracted from the epigram quoted, though see next note -- is pluperfect indicative, third person singular, of pa/omai ("I acquire"). The verb is not found in the present and commonly appears in the perfect or pluperfect: see generally LSJ s.v.
[1] For this materal Adler compared ('cf.') the scholia to Xenophon, Anabasis 1.9.19, where editors print e)pe/pato in a textually unstable passage. Alternatively [FJ], perhaps extracted from the first-century-BC grammarian Philoxenus (phi 394), fr. 161 (= Etymologicum Gudianum 490, 10 Sturz, and Etymologicum Genuinum AB, s.v. polupa/mwn), which has similar wording: pw= ga\r to\ ktw=mai kai\ pa/sw me/llwn, r(hmatiko\n o(/noma pa/mwn kai\ polupa/mwn. Philoxenus advocated a theory that Greek vocabulary was based on a core of monosyllabic verbs: see Dickey [below] 3.1.10 (p. 85). pw= is apparently a construct of the grammatical and lexicographical traditions; it is also found in the scholia to Homer, Aeschylus, Aristophanes, and Lycophron, and (post-Suda) in Eustathius and the Etymologicum Magnum. Only middle/passive forms are found in literary authors.
[2] Greek Anthology 6.98.5-6 (Zonas); cf. lambda 847 and gamma 162. Of the three instances of the quotation, only this one identifies it as "in the Epigrams," the Suda's customary way of referring to the Anthology. LSJ cites only this instance from the Anthology and P.Lond. 2.370.1 for klhri/on, a diminutive of klh=ros; to these add Hesychius kappa2868, and P.Stras. 4.193. Further extracts from this epigram are at lambda 533 and omicron 153.