Aythya

Từ điển WordNet v3.1 - WordNet Dictionary

noun

canvasback;
redhead;
pochard;
etc.
• Syn:
genus Aythya
• Hypernyms:
bird genus
• Member Holonyms:
Anatidae, family Anatidae
• Member Meronyms:
canvasback, canvasback duck, Aythya valisineria, pochard, Aythya ferina,
redhead, Aythya americana, scaup, scaup duck, bluebill, broadbill