- any of various diving ducks, as the scaups, goldeneyes, scoters, and eiders, found principally on seas.
Origin of sea duck
First recorded in 1745–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of various large diving ducks, such as the eider and the scoter, that occur along coasts