Home › Words › E › eiderduckeiderduckeiderduck · noun — an eider.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom eider + duck.nounAn eider.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.eider 79% match — Any of the species of Somateria spp. and Polysticta stelleri or of the seaduck subfamily Merginae, which line their nests with fine down (taken from their own bodies). vs eiderduck →eiderdown 77% match — The down of the eider duck, used for stuffing pillows and quilts. vs eiderduck →ducklet 69% match — A small duck or duckling. vs eiderduck →annet 68% match — A duck or drake. vs eiderduck →whewer 67% match — whew duck, Eurasian wigeon, wigeon (Mareca penelope). vs eiderduck →doucker 66% match — Any of a number of swimming birds that dive underwater:; grebe vs eiderduck →duckly 66% match — Of, pertaining to, or characteristic of a duck or ducks. vs eiderduck →duckess 66% match — A female duck. vs eiderduck →