Definition of eider in English:

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Pronunciation: /ˈīdər/


(also eider duck) (plural same or eiders)
1A northern sea duck, of which the male has mainly black and white plumage with a colored head, and the brown female has soft down feathers that are used to line the nest.
  • Genus Somateria (and Polysticta), family Anatidae: four species, in particular the common eider (S. mollissima).
Example sentences
  • Sea ducks like scoters and eiders are also divers.
  • Both of these types are plentiful on the Cape, as are sea ducks, such as scoters and eiders, viewable from many vantage points.
  • They frequently nest in colonies, often in association with eiders.
1.1 another term for eiderdown.


Late 17th century: from Icelandic æthur, from Old Norse æthr.

Words that rhyme with eider

chider, cider, divider, glider, Guider, Haida, hider, Ida, insider, Oneida, outsider, provider, rider, Ryder, Saida, slider, spider, strider, stridor

For editors and proofreaders

Syllabification: ei·der

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