Feminine adjective corresponding to pi/wn (pi 1630), used most often of land. Same or similar glossing in other lexica, including Apollonius' Homeric Lexicon, and in a scholion to Homer, Iliad 19.180, where it is applied to a meal (in the dative: web address 1); and cf. pi 1548, and more generally pi 1546, pi 1569, pi 1569.
The stem with -r- in the feminine has a parallel in Sanskrit: see LSJ s.v.