eider
/ˈaɪdə(r)/noun
(亦作eider duck)(复同单, 或eiders)
1- a northern sea duck, of which the male has mainly black-and-white plumage with a coloured head, and the brown female has soft down feathers which are used to line the nest绒鸭,绵凫。
1.1
- Genus Somateria (and Polysticta), family Anatidae: four species, in particular the common eider (S. mollissima).绒鸭属, 鸭科：4种, 尤指欧绒鸭（拉丁名S. mollissima）。
1.2
- （亦作eider down）[mass noun] small, soft feathers from the breast of the female eider duck绒鸭绒, 绒鸭的绒毛。
词源
late 17th cent.: from Icelandic æthur, from Old Norse æthr.