eider duck

Noun
  1. Duck of the northern hemisphere much valued for the fine soft down of the females (synset 101855836)
    is a type of: sea duck - any of various large diving ducks found along the seacoast: eider; scoter; merganser
    belongs to: genus somateria, somateria - eider ducks
    has: eiderdown - down of the eider duck
    same as: eider

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