Poltergeist (help·info) (from German poltern, meaning to rumble or make noise, and Geist, meaning "ghost" or "spirit") denotes an invisible spirit or ghost that manifests itself by moving and influencing objects, generally in a particular location such as a house or room or place within a house.

[as in Conor Oberst's "I felt your Poltergeist love / Like Savanna heat." Competing with Krankenschwester to be the greatest German word, and making me like the language again]