E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Eider-down.
The down of the eider duck. This duck is common in Greenland, Iceland, and the Islands north and west of Scotland. It is about the size of a goose, and receives its distinctive name from the river Eider, in Denmark.
[Portraiture of the King]
