English edit

Alternative forms edit

Etymology edit

eider +‎ down

Noun edit

eiderdown (countable and uncountable, plural eiderdowns)

  1. (uncountable) The down of the eider duck, used for stuffing pillows and quilts.
    • 1929, Robert Dean Frisbee, The Book of Puka-Puka, Eland, published 2019, page 80:
      A great sea lifted us high and, crashing down with a deafening roar, carried us swiftly along on light foam as soft as eiderdown.
  2. (countable) A quilt stuffed with this down.

Translations edit