Ζωστήριος
From LSJ
τοῖς οἰκείοις βουλεύμασιν ἁλίσκεσθαι → hoist by one's own petard, hoist with one's own petard, hoist on one's own petard, hoisted by one's own petard, be hoist with one's own petard
English (LSJ)
α, ον, A of Ζωστήρ (a place on the west coast of Attica), Ζωστήριος Ἀπόλλων IG12.324.70, Euph.95b, Paus.1.31.1, cf.foreg.IV. 2; Ζωστηρία, epith. of Athena, Schwyzer319(Delph., vi/v B.C.), IG 12.324.97(v B.C.), Paus.9.17.2, St.Byz. s.v. Ζωστήρ, Hsch. (-στειρα cod.); Ἀθηνᾶ ζωστῆρα (sic) AB261. 2 ζωστήριον, τό,= ζωστήρ, dub. in PLond.2.402.8(ii B.C.), cf.Gloss.
