n. an Arctic white whale, Monodon monoceros, the male of which has a long straight spirally fluted tusk developed from one of its teeth. Also called BELUGA.
Etymology: Du. narwal f. Da. narhval f. hval whale: cf. ON n{aacute}hvalr (perh. f. n{aacute}r corpse, with ref. to its skin-colour)