| 单词 | eider |
| 释义 | Word Frequency eider or 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 C18: from Old Norse æthr; related to Swedish ejder, Dutch, German Eider |
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