Lewis & Short

dēpulsor, ōris, m. [depello], one who drives away, removes, repels (rare): dominatus, * Cic. Phil. 2, 11, 27: malorum, Lact. 2, 14, 13: alius vel servator honorum vel malorum depulsor, Boëth. Cons. Phil. 4, 6.
In inscriptions, an epithet of Jupiter, as the averter of evil (cf. Averruncus), Inscr. Orell. 2232 al.