A dybbuk is a concept from Jewish folklore, referring to the spirit of a deceased person that possesses the body of a living individual. This spirit is believed to be trapped between worlds, often due to unresolved issues or unfinished business. The term originates from the Hebrew word "dibbuk," which means "to cling" or "to adhere." In traditional Jewish belief, a dybbuk can be exorcised through rituals performed by a rabbi or spiritual leader. The exorcism aims to free the living person from the dybbuk's influence, allowing the spirit to find peace. This concept has been popularized in various forms of literature and film, including the play The Dybbuk by S. Ansky.