noun Etymology: perhaps from gray + 1lag Date: circa 1713 the common gray wild goose ( Anser anser ) of Europe from which most domestic breeds of geese are descended
GREYLAG
Meaning of GREYLAG in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012