N-UNCOUNT [oft NOUN n] 马毛（指马鬃或马尾毛，过去用作床垫及扶手椅等家具的填料） Horsehair is hair from the tails or manes of horses and was used in the past to fill mattresses and furniture such as armchairs. 马毛（指马鬃或马尾毛，过去用作床垫及扶手椅等家具的填料）