n. the grounds in back of a house
n. 后院, 后庭
1. The children are playing in the backyard.
孩子们在后院玩耍。
2. We planted some flowers in our backyard.
我们在后院种了一些花。
3. There is a swing set in my friend's backyard.
我朋友的后院有一个秋千架。