hedenhös

Etymology
From, , equivalent to  + hös, where hös is of uncertain origin. Possibly related to Icelandic, meaning burial mound or possibly funerary urn in this compound.

Noun

 * 1)  heathen times
 * 2)  a long, long time ago, time immemorial

Usage notes
Somewhat rare. Likely only recognized by many native speakers from the title of the children's book series Barna Hedenhös (The Hedenhös children).