- To cast out, as a devil, evil spirits, etc., by
conjuration or summoning by a holy name, or by certain ceremonies; to
expel (a demon) or to conjure (a demon) to depart out of a person
possessed by one. - To deliver or purify from the influence of an evil
spirit or demon.
Meaning of 'exorcise' (Princeton's WordNet)
1 . exorcise
[ v]
Meaning (1): - expel through adjuration or prayers