The headword is a compound neuter noun in the nominative or accusative plural; the gloss presents each of the two elements of the compound as a separate word. (The point of the gloss may be more to show the etymology of the headword than to define it; cf. Etymologicum Gudianum 484.29; Etymologicum Magnum 693.11.) The most prominent literary sources for this form of the headword are Euripides, Orestes 382, and Lycophron, Alexandra 298; commentary to one of these passages is probably a source for the entry; cf. the scholia to both. Hesychius pi2966 and Photius pi1454 Theodoridis have the same headword but gloss it differently.
For a related word see pi 2966, and cf. pi 2866.