A disturbance characterized by bizarre physical effects of paranormal origin, suggesting mischievous or destructive intent: these phenomena include the unexplained movement or breakage of objects, loud raps, the lighting of fires, and occasionally personal injury to people; in contrast to a haunting, the phenomena often seem to depend upon the presence of a particular living individual, called the “focus,” frequently an adolescent or child; and apparitions are rarely seen. [German: literally, “noisy ghost”]