Lewis Short
(adjective) : rĕpulsōrĭus, a, um, id.
* Driving or forcing back, repulsory: cohortes,Amm. 24, 4, 7.—As subst.: rĕpulsōrĭum, ii, n., a means of driving back, Ambros. in Psa. 118, Serm. 4, § 15 fin.
Charlton T. Lewis, Charles Short, A Latin Dictionary