guillemot
noun
guil·le·mot ˈgi-lə-ˌmät 
1
British : a common murre (Uria aalge)
2
: any of a genus (Cepphus) of narrow-billed auks of northern seas
Example Sentences
Recent Examples on the Web At Cape Ann off Rockport, a summering harlequin duck and a black guillemot offshore at the Dry Salvages, and at Andrews Point in Rockport, a common murre and three black guillemots. 
BostonGlobe.com, 9 July 2022 Birds at Race Point in Provincetown included 2 Pacific loons, 3 common murres, a black guillemot, 50 razorbills, 6 great cormorants. BostonGlobe.com, 13 Apr. 2022 That bird is the black guillemot, a sleek ebony sea bird that spends its entire life in the Arctic. Ned Rozell, Anchorage Daily News, 23 Apr. 2022 From Plum Island, came reports of two little blue herons, a Baird’s sandpiper, a black guillemot, and a yellow-throated warbler. BostonGlobe.com, 2 Oct. 2021 Sightings at Race Point in Provincetown included 3 Pacific loons, 26 red-necked grebes, 10 dovekies, 35 common murres, 255 razorbills, a black guillemot, 14 Iceland gulls, and 68 black-legged kittiwakes. BostonGlobe.com, 13 Jan. 2021 At a small sandbar island in the Arctic, Mandt’s black guillemots are breeding earlier, trying to keep up with the pace of ice melt. National Geographic, 19 Aug. 2019 Another striking feature of climate change at this small colony: Polar bears now visit the sandbar and try to eat the small guillemot snacks. National Geographic, 19 Aug. 2019 Tens of thousands of starving guillemots were washing up in the Netherlands. Rafil Kroll-zaidi, Harper's magazine, 10 Apr. 2019 See More
BostonGlobe.com, 9 July 2022 Birds at Race Point in Provincetown included 2 Pacific loons, 3 common murres, a black guillemot, 50 razorbills, 6 great cormorants. BostonGlobe.com, 13 Apr. 2022 That bird is the black guillemot, a sleek ebony sea bird that spends its entire life in the Arctic. Ned Rozell, Anchorage Daily News, 23 Apr. 2022 From Plum Island, came reports of two little blue herons, a Baird’s sandpiper, a black guillemot, and a yellow-throated warbler. BostonGlobe.com, 2 Oct. 2021 Sightings at Race Point in Provincetown included 3 Pacific loons, 26 red-necked grebes, 10 dovekies, 35 common murres, 255 razorbills, a black guillemot, 14 Iceland gulls, and 68 black-legged kittiwakes. BostonGlobe.com, 13 Jan. 2021 At a small sandbar island in the Arctic, Mandt’s black guillemots are breeding earlier, trying to keep up with the pace of ice melt. National Geographic, 19 Aug. 2019 Another striking feature of climate change at this small colony: Polar bears now visit the sandbar and try to eat the small guillemot snacks. National Geographic, 19 Aug. 2019 Tens of thousands of starving guillemots were washing up in the Netherlands. Rafil Kroll-zaidi, Harper's magazine, 10 Apr. 2019 See More Word History
Etymology
French, from Middle French, diminutive of Guillaume William
First Known Use
circa 1672, in the meaning defined at sense 1