1. a seabird with a narrow pointed bill that nests on cliffs and dives underwater to catch fish

Examples

• The guillemot colony covered the entire cliff face with thousands of nesting birds.
• We watched guillemots diving deep into the ocean to catch small fish.
• The common guillemot has distinctive black and white plumage during breeding season.
• Guillemots lay their eggs directly on narrow cliff ledges without building nests.
• The ornithologist studied guillemot feeding patterns in the North Atlantic.
• Thick-billed guillemots are well adapted to Arctic waters.