a small freshwater duck, typically with a greenish band on the wing that is most prominent in flight 小凫,短颈野鸭
Genus Anas, family Anatidae: several species, in particular the common Eurasian and Canadian green-winged teal (A. crecca) 鸭属,鸭科:数种,尤指欧亚地区和加拿大常见的绿翅鸭(拉丁名A. crecca) ■(亦作 teal blue)[mass noun]a dark greenish-blue colour 凫蓝,绿光暗蓝色
语源
Middle English: of unknown origin; related to Dutch teling