Origin of eider
1735–45; < Icelandic æthar (in 18th century spelled ædar), genitive singular of æthur eider duck, in phrase ædar dūnn down of the eider duck; spelling eider < German or Swedish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for eider
Then I bought a square Lapp cap, the top filled with eider down.The Land of the Long Night
Paul du Chaillu
There, he is in place—an eagle in a nest lined with down, soft as eider.
The rudder was nothing much, but it was well that it held to the Eider.
And there was no need, because my taking the Eider explained it.'
That passage to the Schleswig coast—the Eider River, did you say?
- 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
Word Origin and History for eider
1743, from German Eider or Dutch eider, both from Old Norse æþar, genitive of æþr "duck," from a North Germanic root.
Online Etymology Dictionary, © 2010 Douglas Harper