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n. pl. scaup or scaups
1. Either of two diving ducks (Aythya marila or A. affinis) of the Northern Hemisphere, the male of which has gray, black, and white plumage. Also called bluebill.
2. A small diving duck (Aythya novaeseelandiae) of New Zealand, having dark plumage.
[Short for scaup-duck, perhaps from Scots scalp, scaup, bed of mussels (from its feeding on shellfish).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Animals) either of two diving ducks, Aythya marila (greater scaup) or A. affinis (lesser scaup), of Europe and America, having a black-and-white plumage in the male. Also called (US): bluebill or broadbill
[C16: Scot variant of scalp]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any of several diving ducks of the genus Aythya, esp. A. marila, of the Northern Hemisphere, having a bluish gray bill.
[1665–75; by ellipsis from scaup duck]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||scaup - diving ducks of North America having a bluish-grey bill|
duck - small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs
Aythya marila, greater scaup - large scaup of North America having a greenish iridescence on the head of the male
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