Lewis & Short

ruspor, āri, v. dep. n., to search through, examine, explore: crebro quaerere, Fest. p. 264 Müll.: scrutari, Non. 166, 19 (anteclass.): ut latebras ruspans rimarem, Poët. ap. Fest. p. 265 Müll. (Trag. Rel. p. 209 Rib.); cf.: vagent ruspantes silvas, Att. ap. Non. 166, 20: jube nunc animo ruspari Phrygas, id. ib. 19.