The story
- Old Norse · derived fromnáhvalr
- Norwegian Bokmål · borrowed fromnarhval
- Dutch · borrowed fromnarwal
- English todaynarwhal
From Dutch narwal or Danish/Norwegian Bokmål narhval, from Old Norse náhvalr, from nár (“corpse”) + hvalr (“whale”). Compare Icelandic náhvalur.
Etymology from Wiktionary, CC BY-SA 4.0.