프랑스 루앙 지역에서 유래한 몸집이 큰 집오리의 한 품종.
A breed of large domestic duck, originally from France, similar in color to a mallard.
예문:
"The farmer raised a flock of Rouen ducks for their meat and beautiful plumage."
"A Rouen is easily distinguished from a mallard by its much larger body size."