(1):

(n.) One who professes a regard for spiritual things only; one whose employment is of a spiritual character; an ecclesiastic.

(2):

(n.) One who maintains the doctrine of spiritualism.

(3):

(n.) One who believes in direct intercourse with departed spirits, through the agency of persons commonly called mediums, by means of physical phenomena; one who attempts to maintain such intercourse; a spiritist.

(4):

(a.) Spiritualistic.