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
adv.
Privately: P. and V. ἰδίᾳ. Only, alone: P. and V. μόνον.
