a guardian or defender against theft or illegal practices or waste
a dog trained to guard property
双语例句
I was talking to my Uncle Hades about it the other day, and he suggested another name, the name of his three-headed watch dog. 有一天我和我哈得斯叔叔谈到了这个，他推荐了另一个名字，他的三个头的看门狗。
