The Collaborative International Dictionary
dybbukim
dybbuk \dyb"buk\ (d[i^]b"b[u^]k; Hebrew d[=e]*b[=oo]k"), n.; pl. dybbuks; Hebr. dybbukim (d[=e]`b[=oo]k*[=e]m"). (Jewish folklore) the wandering soul of a dead person, or a demon, that enters the body of a living person and controls that body's behavior. It may be exorcised by religious rites.
Syn: dibbuk.