ἑπτατειχεῖς
From LSJ
ὡς μήτε τὰ γενόμενα ἐξ ἀνθρώπων τῷ χρόνῳ ἐξίτηλα γένηται → in order that so the memory of the past may not be blotted out from among men by time
English (LSJ)
ἔξοδοι the
A seven outlets of the walls of Thebes, A.Th.285.
German (Pape)
[Seite 1013] ἔξοδοι, mit sieben Mauern, Thürmen, von Theben, Aesch. Spt. 266.