Draugr

The draugr or draug (Old Norse: draugr, plural draugar; modern Icelandic: draugur, Faroese: dreygur, and Danish, Swedish, and Norwegian: draug) is an undead creature from the Scandinavian saga literature and folktales.

Commentators extend the term draugr to the undead in medieval literature, even if it is never explicitly referred to as such in the text, and designated them rather as a haugbúi ("barrow-dweller") or an aptrganga, literally "again-walker" (Icelandic: afturganga).