- the soft, fine breast feathers, or down, of the eider, used as a stuffing for quilts, pillows, etc.
- a quilt stuffed with such feathers
Origin of eiderdown; from Old Norse æthar-d?n: see eider and amp; down
also eider down
- The down of the eider, used as stuffing for quilts and pillows.
- A quilt stuffed with the down of the eider.
- A warm napped fabric.
Origin of eiderdownSwedish ejderdun, from Icelandic ædhar-dún : ædhar, genitive of ædhr, eider (from Old Norse &aemac;dhr) + dún, down (from Old Norse d&umacron;nn).