canvasback
中文解釋
wordnet sense
Collocation Usage
Collins Definition
Noun
canvasbacks, plural;
/ˈkanvəsˌbak/,
Font size: 
canvasbacks, plural;
-
A North American diving duck with a long, sloping black bill, related (and with similar coloring) to the pochard, common in Eurasia
Web Definitions:
- North American wild duck valued for sport and food
- The Canvasback (Aythya valisineria), is a large North American diving duck, that ranges from between 48–56 cm long and weighs approximately 862-1588 g, with a wingspan of 79-89 cm. ...