greylag
/ˈgreɪlæg/(亦作greylag goose)
noun
1- a large goose with mainly grey plumage, which is native to Eurasia and is the ancestor of the domestic goose灰雁。
1.1
- Anser anser, family Anatidae.拉丁名Anser anser, 鸭科。
词源
early 18th cent.: probably from GREY + dialect lag 'goose'， of unknown origin.