ἑξαετής
From LSJ
Οὕτως ἔδειξέν μοι κύριος καὶ ἰδοὺ ἐπιγονὴ ἀκρίδων ἐρχομένη ἑωθινή, καὶ ἰδοὺ βροῦχος εἷς Γωγ ὁ βασιλεύς (Amos 7:1) → Thus the Lord showed me and look, early-morning offspring of locusts coming, and look, one locust-larva: Gog the king.
English (LSJ)
ές, or ἑξᾰ-έτης, ες, (ἔτος)
A six years old, IG3.1336, BGU983.18, J.AJ19.9.1, etc.:—fem. ἑξᾰ-έτις, ιδος, Theoc.14.33 (v.l.). II of six years, χρόνος Plu.Pyrrh. 26. Adv. ἑξάετες for six years, Od.3.115; cf. ἑξέτης.