'Exorcise' definitions:

Definition of 'exorcise'

verb

Expel through adjuration or prayers; "exorcise evil spirits" [syn: exorcise, exorcize]

From: GCIDE

Exorcise \Ex"or*cise\ ([e^]ks"[o^]r*s[imac]z), v. t. [imp. & p. p. Exorcised (-s[imac]zd); p. pr. & vb. n. Exorcising (-s[imac]`z[i^]ng).] [L. exorcizare, Gr. 'exorki`zein; 'ex out + "orki`zein to make one swear, bind by an oath, fr. "o`rkos oath: cf. F. exorciser.]
1. 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. [1913 Webster]
He impudently excorciseth devils in the church. --Prynne. [1913 Webster]
2. To deliver or purify from the influence of an evil spirit or demon. [1913 Webster]
Exorcise the beds and cross the walls. --Dryden. [1913 Webster]
Mr. Spectator . . . do all you can to exorcise crowds who are . . . processed as I am. --Spectator. [1913 Webster]