[can.vas.back] n (1782): a No. American wild duck (Aythya valisineria) that has a reddish brown head, black breast, and whitish body and is characterized esp. by the elongate sloping profile of the bill and head
CANVASBACK
Meaning of CANVASBACK in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012