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plural poltergeists or poltergeister
(parapsychology) An unseen ghost which makes noises and causes disruption, especially by causing physical objects to move or fly about. quotations
"Perhaps even a small poltergeist might come your way. Any trifle would be welcome." His bull's bellow of laughter followed them into the lift.
1925 July – 1926 May, A[rthur] Conan Doyle, “(please specify the chapter number)”, in The Land of Mist (eBook no. 0601351h.html), Australia: Project Gutenberg Australia, published April 2019