- a Eurasian duck, Mergus albellus, closely akin to mergansers: the male is white marked with black and gray.
Origin of smew
First recorded in 1665–75; origin uncertain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for smew
The Smew does not visit the land much, and even sleeps upon the water.
During winter the Smew is gregarious, living in flocks of thirty or forty individuals, mostly immature.
Smew, smū, n. a bird of the family Anatid, in the same genus as the goosander and mergansers.
- a merganser, Mergus albellus, of N Europe and Asia, having a male plumage of white with black markings
C17: of uncertain origin