The headword is the 3rd pl. imperfect ind. med./pass. of the verb οἴγνυμι : see Web Address 1 for the LSJ entry. The gloss is the corresponding form of the compound - and far commoner - verb ἀνοίγνυμι . From the scholia to Homer, Iliad 2.809 [Web Address 2] (cf. 8.58), where the headword occurs (of gates); similar glosses in Photius, Hesychius, and other lexica. See also omega 38, where the uncontracted form is listed; also other forms of this verb at omicroniota 21 and omega 39.