smew
Concise Oxford English Dictionary © 2008 Oxford University Press:
smew /smjuː/
▶noun a small migratory merganser (duck) of northern Eurasia, the male of which has white plumage with a crest and fine black markings. [Mergus albellus.]
– origin C17: obscurely rel. to Du. smient ‘wigeon’ and Ger. Schmeiente ‘small wild duck’.
'smew' also found in these Oxford entries:
