Akademik

Niflheim
/niv"euhl haym'/, n. Scand. Myth.
a place of eternal cold, darkness, and fog, ruled over by Hel: abode of those who die of illness or old age.
[ < ON Niflheimr, equiv. to nifl- (c. OE nifol darkness, OHG nebal mist, cloud, L nebula (see NEBULA)) + heimr world, HOME]

Useful english dictionary. 2012.