black-and-white short-necked web-footed diving bird of northern seas
source: WordNet 3.0
A name given to various species of arctic sea birds of the family Alcidæ. The great auk, now extinct, is Alca (or Plautus) impennis. The razor-billed auk is A. torda. See Puffin, Guillemot, and Murre.