Poltergeist

A poltergeist, according to Mlle Maupassant, was a "mischievous ghost". She claimed it was a word of German origin. She implied to Nyssa that a poltergeist was the cause for the strange goings-on at the Tremayne Academy, but the Trakenite believed there was likely a scientific explanation for the school's apparently supernatural woes. (AUDIO: Winter for the Adept)

Poltergeists could be related to the generation of psychic energy. (TV: The Awakening)

Some of the weaker Eternals, who could only move objects, would be mistaken for poltergeists. (PROSE: Blood Harvest)