ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
Etymology: probably from German eiderdaune, from Icelandic æthardūnn, from æthar (gen. of æthur ) + dūnn down, from Old Norse — more at down
1. : the down of the eider valued for its lightness, softness, resiliency, and warmth
2. : a quilt or comforter ; especially : one filled with eiderdown
3. : a soft lightweight clothing fabric knitted or woven of wool, cotton, or man-made fibers and napped on one or both sides