Lewis Short
(adjective) : purgātōrĭus, a, um, id.
* Cleansing, purgative, purgatory (post-class.): medicamentum,Symm. Ep. 6, 65.—Trop.: virtutes,Macr. Somn. Scip. 1, 8: poenae, Aug. Civ. Dei, 7, 7: tormenta,id. ib. 21, 16.
Charlton T. Lewis, Charles Short, A Latin Dictionary