LSJ
τά, (< οἴγνυμι) festival at the opening of casks of new wine, held at the Anthesteria, Plu. 2.655e, 735e ; — later πιθοιγία, ἡ, Eust. 1363.26 ; πιθοιγὶς ἠώς, the morning of this festival, Call. Aet. 1.1.1; Πιθοιγιών, ῶνος, ὁ, month in which the festival took place, prob. in IG 12(8).645 (Peparethus, -κιών lapis).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)