eider

[ ahy-der ]
/ ˈaɪ dər /

noun

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
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British Dictionary definitions for eider

eider

eider duck

/ (ˈaɪdə) /

noun

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

Word Origin for eider

C18: from Old Norse æthr; related to Swedish ejder, Dutch, German Eider
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