(verb) : per-vestīgo, āvi, ātum, 1
* To trace out, search out.
* Lit., of hounds; hence of spies: canes venaticos diceres, ita omnia odorabantur et pervestigabant, ut, etc.,Cic. Verr. 2, 4, 13, § 31.
* Trop., to seek out, examine, investigate: operam ut sumam ad pervestigandum, ubi sit illaec,Plaut. Merc. 5, 2, 94; cf. id. Rud. 1, 4, 5; Cic. de Or. 2, 34, 147: quae a me pervestigata et cognita sunt,Cic. Verr. 2, 5, 68, § 174: Locris sacrilegium pervestigatum a Q. Minucio erat,Liv. 31, 13, 1.

s. TLL