somateria

from The Century Dictionary.

• noun A genus of Anatidæ of the subfamily Fuligulinæ, including various marine ducks of large size, with copious down on the under parts, with which the female lines the nest, and large, diversiform, variously feathered or gibbous bill; the eiders or eider-ducks.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun eider ducks