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
tortĭo: ōnis, f. id.,
I torment, torture (late Lat.): tortione legitimā peribunt, Firm. Math. 8, 15: vesicae, Veg. Vet. 1, 46 fin.>