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eider

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noun ei·der \ˈī-dər\

Definition of eider

  1. 1 :  any of several large northern sea ducks (genera Somateria and Polystica) having fine soft down that is used by the female for lining the nest —called also eider duck

  2. 2 :  eiderdown 1



Origin and Etymology of eider

Dutch, German, or Swedish, from Icelandic æthur, from Old Norse æthr


First Known Use: 1743


EIDER Defined for Kids

eider

play
noun ei·der \ˈī-dər\

Definition of eider for Students

  1. :  a large duck of northern seas with very soft down




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