ἑλέπολις · helepolis — LSJ
city-destroying, epith. of Helen, A. Ag. 689 (lyr.); of Iphigenia, E. IA 1476 (lyr.), 1511 (lyr.); of Lamia, Com.Adesp. 303.
fem. Subst., engine for sieges, invented by Demetrius Poliorcetes, D.S. 20.48, Plu. Demetr. 21, Ph. Bel. 95.39, Vitr. 10.16.4, etc.; ἄνευ μηχανῆς καὶ ἑ. Alciphr. 3.45: pl., ἑ. μηχαναί D.H. 9.68.
metaph., of a person, ἑ. τῆς Ἑλλάδος Hp. Ep. 11; also ἡ τῶν ἀνοσίων ἑ. τοῦτο (sc. πένθος) Ph. 2.191.