- (North American English)
the whole area behind and belonging to a house, including an area of grass and the garden （包括草坪和花园的）屋后附属地带 He grew vegetables in his backyard. 他在后院种菜。 a backyard barbecue 后院烤肉野宴
- (British English)
an area with a hard surface behind a house, often surrounded by a wall （屋后常有围墙的）后院 They lived in a little terraced house with a backyard behind it and a tiny garden in front. 他们住在一栋小排房中，带个后院，前面有个小花园。
see also yard
Idioms
in your (own) backyard
in or near the place where you live or work 在自己生活（或工作）的地方附近；在自己的后院 The residents didn't want a new factory in their backyard. 居民不希望在自己家附近建新工厂。 The party leader is facing opposition in his own backyard (= from his own members). 该党领导面临着党内人士的反对。