| 单词 | canvasback |
| 释义 | canvasback /kan"veuhs bak'/, n. , pl. canvasbacks, (esp. collectively) canvasback. a North American wild duck, Aythya valisineria, the male of which has a whitish back and a reddish-brown head and neck. [1595-1605, Amer.; after the canvaslike color of its back] |
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