eider

n. 绒鸭, 绒鸭绒

ei.der

n.（名词）
Any of several large sea ducks, especially of the genusSomateria of northern regions, having soft, commercially valuable down and predominantly black and white plumage in the male.
绒鸭：一种大海鸭，尤指北部地区的欧绒鸭 属，有柔软的有商业价值的鸭绒，雄鸭毛主要为黑白色

来源：
Ultimately from Old Norse ôdhar [genitive of] ôdhr
最终源自 古斯堪的纳维亚语 ôdhar [] ôdhr的所有格