noun
Usage: usually capitalized C
1. : a very large wild goose ( Anser cygnoides syn. Cygnopsis cygnoides ) of northeastern Asia that interbreeds freely with the grayleg and is probably an ancestor of various eastern domesticated geese
2. : a brown or white goose of a breed that originated in China probably from the Chinese goose and is distinguished by upright carriage, large knob at the base of the bill, and small size