Pronunciation: (rā'zur-bild"), [key]
a black and white auk, Alca torda, of the American and European coasts of the northern North Atlantic, having a compressed black bill encircled by a white band. Also called ra'zor•bill". See illus. under auk.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.