aptrganga
nafnorðkvenkynaptr-ganga
u, f. [ganga aptr], a ghost, apparition, the French revenant; about this superstition vide Ísl. Þjóðs. i. 222–317, Grett. ch. 34–37 (the ghost Glám), Eb. ch. 34, 50–55, 63 (Thorolf Bægifót), Ld. ch. 17, Sd. ch. 17–22, 30 (Klaufi), Háv. 41, Flóam. ch. 28, etc. etc.