n. any sea diving-bird of the family Alcidae, with heavy body, short wings, and black and white plumage, e.g. the guillemot, puffin, and razorbill.
Phrases and idioms:
great auk an extinct flightless auk, Alca impennis. little auk a small arctic auk, Plautus alle.
Etymology: ON {aacute}lka