n. Any seabird belonging to the genera Uria and Cepphus of the auk family Alcidae. They have black and white bodies and are good at swimming and diving.
the GNU version of the Collaborative International Dictionary of English
n. One of several northern sea birds, allied to the auks. They have short legs, placed far back, and are expert divers and swimmers.
The Century Dictionary and Cyclopedia
n. A bird of the genus Uria of Brisson, or of either of the genera Uria and Lomvia of late authors; a murre.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. small black or brown speckled auks of northern seas
Word Usage
"The guillemot is a diving bird found in the Northern seas, while the penguin may be looked upon as representing the divers of the Southern Ocean."