(Science: ornithology) One of several northern sea birds, allied to the auks. They have short legs, placed far back, and are expert divers and swimmers.
The common guillemots, or murres, belong to the genus Uria (as u. Troile); the black or foolish guillemot (Cepphus grylle, formerly Uria grylle), is
Synonym: sea pigeon and eligny. See murre.