Definition of guillemot in English:

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Pronunciation: /ˈɡiləˌmät/


A black-breasted auk (seabird) with a narrow pointed bill, typically nesting on cliff ledges.
  • Family Alcidae, genus Cepphus: several species, in particular the North Atlantic black guillemot (C. grylle), with a white wing patch in summer and pale plumage in winter
Example sentences
  • The lines of supporting buoys have been adopted by cormorants, gulls, guillemots, eider ducks, oystercatchers and even the odd heron.
  • Along thousands of miles of coastline, you will see colonies of seabirds clustered in cliffs - gannets, puffins, guillemots, razorbills, and kittiwakes.
  • There's always the chance of a minke whale, too, while terns, fulmars, guillemots, puffins and shearwaters come as standard.


Late 17th century: from French, diminutive of Guillaume 'William'.

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