A
poltergeist (German for
noisy ghost) is an invisible entity that moves objects and causes electrical malfunctions by
telekinesis. Doing so classifies them as
(inter)active spirits, in contrast to
non-interactive ones which engage only in minimal action such as showing themselves. Poltergeister (German plural) are mischievous beings, and connected to an object (usually a building) or a person. The
haunting[?] by a poltergeist is called
infestation. Most classic poltergeist stories and (presumably) incidents originate in
England.
Famous (said-to-be) poltergeist infestations :
Both the word and the concept poltergeist became famous by the Poltergeist movies and the TV series Poltergeist - The Legacy[?].