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Any of several large sea ducks, especially of the genus Somateria of northern regions, having soft, commercially valuable down and predominantly black and white plumage in the male.

[Back-formation from eiderdown.]
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.


(ˈaɪdə) or

eider duck

(Animals) any of several sea ducks of the genus Somateria, esp S. mollissima, and related genera, which occur in the N hemisphere. The male has black and white plumage, and the female is the source of eiderdown
[C18: from Old Norse æthr; related to Swedish ejder, Dutch, German Eider]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ei′der duck`

any of several large diving ducks, esp. of the genus Somateria, of northern seas.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.eider - duck of the northern hemisphere much valued for the fine soft down of the femaleseider - duck of the northern hemisphere much valued for the fine soft down of the females
sea duck - any of various large diving ducks found along the seacoast: eider; scoter; merganser
genus Somateria, Somateria - eider ducks
eiderdown - down of the eider duck
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


nEiderente f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˈaɪdəʳ] n (also eider duck) → edredone m
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in classic literature ?
Its vivid yellows fairly screamed aloud; its whites were as eider down; its blacks glossy as the finest anthracite coal, and its coat long and shaggy as a mountain goat.
The landlord was near spraining his wrist, and I told him for heaven's sake to quit -- the bed was soft enough to suit me, and I did not know how all the planing in the world could make eider down of a pine plank.
The first statistical test based on all data show that site and the interaction between site, season and density of hunting motorboats had significant effects on the group size of eider (Table 1; results of primary model are given in the Supplementary material Appendix 1 Table A1).
HEAVY-DUTY frost sheets will be deployed at Newcastle in an attempt to ensure Saturday's feature Eider Chase meeting gets the go-ahead, with the track raceable yesterday.
SHOTGUN PADDY warms up for a possible Grand National bid by making the long journey north for Newcastle's Eider Chase on Saturday.
Smith's license plate reads KEIDER, standing for king eider, the rarest huntable duck on the East Coast.
And none is tougher than North America's largest--the common eider.
Berth occupancy was 98% at the Port on Monday where a total twelve ships namely, Maersk Idaho, Rio Eider, Christenia, Sea Baisen, Free Envoy, Ina Lotte, Aquila Voyager, Al Fanourios and Al Soor II are currently occupying berths to load/offload containers, cement, wheat, urea, coal, chemical and diesel oil respectively during last 24 hours.
Hundreds of common eider ducks were cast ashore, bedraggled and dead, at the wrack line, where the receding tide leaves debris, "lying just one after the other," she said.
Those are just some of the challenges facing the Izembek National Wildlife Refuge, near the tip of the Alaska Peninsula, in trying to recover a sea duck called the Steller's eider (Polysticta stelleri).
Because considerable conservation efforts over several years have not halted the decline of two threatened eider species, GAO will not object to the U.S.