graylag n 1: common grey wild goose of Europe; ancestor of many domestic breeds [syn: {greylag}, {graylag}, {greylag goose}, {graylag goose}, {Anser anser}]
Graylag \Gray"lag`\, n. (Zool.) The common wild gray goose ({Anser anser}) of Europe, believed to be the wild form of the domestic goose. See Illust. of {Goose}. [1913 Webster]