to feed a duck by force to fatten it up quickly; often used to describe a method of raising Peking ducks

a cooking method where a duck is stuffed with seasonings after its organs have been removed

used to describe a teaching method based on memorization and rote learning rather than understanding; usually used in the phrase 填鸭式 tián​yā​shì

a duck raised by force-feeding, such as the 北京鸭 běi​jīng​yā