We found 2 definitions of sea duck from 2 different sources.
Noun |
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sea duck - any of various large diving ducks found along the seacoast: eider; scoter; merganser | ||
duck small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs | ||
eider, eider duck duck of the northern hemisphere much valued for the fine soft down of the females | ||
scoter, scooter large black diving duck of northern parts of the northern hemisphere | ||
clangula hyemalis, old squaw, oldwife a common long-tailed sea duck of the northern parts of the United States |