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guillemot

[ gil-uh-mot ]
/ ˈgɪl əˌmɒt /
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noun
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. grylle(black guillemot ), of the North Atlantic Ocean and the similar C. columba(pigeon guillemot ) of the North Pacific Ocean.
British. a murre of the genus Uria.
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Origin of guillemot

First recorded in 1670–80; from French, apparently diminutive of Guillaume “William”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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British Dictionary definitions for guillemot

guillemot
/ (ˈɡɪlɪˌmɒt) /

noun
any northern oceanic diving bird of the genera Uria and Cepphus, having a black-and-white plumage and long narrow bill: family Alcidae (auks, etc), order Charadriiformes

Word Origin for guillemot

C17: from French, diminutive of Guillaume William
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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