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Table of Contents POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

eider

POS

Noun

HYPHEN

ei=der

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WORDNET DICTIONARY

Noun eider has 1 sense

eider(n = noun.animal) eider duck - duck of the northern hemisphere much valued for the fine soft down of the females; Array

is a kind of sea duck

is a member of genus somateria, somateria

has parts: eiderdown

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CIDE DICTIONARY

eider, n. [Of Scand. origin, cf. Icel ær; akin to Sw. eider, Dan. ederfugl.].

Any species of sea duck of the genus Somateria, esp. Somateria mollissima, which breeds in the northern parts of Europe and America, and lines its nest with fine down (taken from its own body) which is an article of commerce; -- called also eider duck. The American eider (S. Dresseri), the king eider (S. spectabilis), and the spectacled eider (Arctonetta Fischeri) are related species. [1913 Webster]

Eider down. [Cf. Icel. æ&edh;ardūn, Sw. eiderdūn, Dan. ederduun.] Down of the eider duck, much sought after as an article of luxury.

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OXFORD DICTIONARY

eider, n.
1 (in full eider duck) any of various large northern ducks, esp. of the genus Somateria.
2 (in full eider-down) small soft feathers from the breast of the eider duck.

Etymology

Icel. aethr

For further exploring for "eider" in Webster Dictionary Online