The headword is third person singular, present indicative middle/passive, of the epic/poetic verb a)/gnumi. Evidently quoted from somewhere -- perhaps Euripides, Helen 410 (web address 1).
1Same glossing in Hesychius (alpha669) and other lexica.↩
2Third person dual imperfect active, "broke through"; doubtless quoted from Homer, Iliad 12.148 (web address 2).↩
3Feminine genitive plural middle/passive participle; instances in Homer, Iliad 16.769, Odyssey 10.123 (see web addresses 3 & 4).