from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An Arctic whale (Monodon monoceros) that has a spotted pelt and is characterized in the male by a long spirally twisted ivory tusk projecting from the left side of its head.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An Arctic cetacean, about 20 feet (6 meters) long; the male has a single twisted pointed canine tooth or tusk projecting forward like a horn.
from the GNU version of the Collaborative International Dictionary of English
- n. An arctic cetacean (Monodon monocerous), about twenty feet long. The male usually has one long, twisted, pointed canine tooth, or tusk, projecting forward from the upper jaw like a horn, whence it is called also sea unicorn, unicorn fish, and unicorn whale. Sometimes two horns are developed, side by side.
from The Century Dictionary and Cyclopedia
- n. A cetacean, Monodon monoceros, of the family Delphinidræ and the subfamily Delphinapterinæ; the sea-unicorn, unicorn-whale, or unicorn-fish.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. small Arctic whale the male having a long spiral ivory tusk
Norwegian or Danish narhval, from Old Norse nāhvalr : nār, corpse (from its whitish color) + hvalr, whale.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Dutch narwal or Danish narhval, from Old Norse náhvalr, from nár ("corpse") + hvalr ("whale"). Compare Icelandic náhvalur. (Wiktionary)