ἀνταπόλλυμι
From LSJ
τὸ ἐγδοχῖον τοῦ ὕδατος καὶ τὰ ἐν τῆι πόλει ὑδραγώγια → the water reservoir and the conduits in the city (or on the acropolis)
English (LSJ)
A destroy in return, E.Ion1328, Pl.Cri.51a. II Pass. and Med., with pf. 2 Act., perish in turn, αὐτὸς ἀνταπωλόμην E. Hel.106, cf.IT715; ὑπὲρ ἀνδρὸς ἑκάστου δέκα ἀνταπόλλυσθαι Hdt.3.14.