/ Dictionary / Index G guillemot: Meaning and Definition of Find definitions for: guil•le•mot Pronunciation: (gil'u-mot"), [key] — n. a black or brown-speckled seabird of the genus Cepphus, of northern seas, having a sharply pointed black bill, red legs, and white wing patches, as C. grylleof the North Atlantic and the similar C. columbaof the North Pacific. a murre of the genus Uria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: guillemot (Thesaurus) Guillemin Guillén Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language