pack rat 什么都攒着，不舍得扔的人。My husband is a huge pack rat. Our garage has no room for cars. 老公什么东西都留着，车库里根本没地方停车。 He calls himself a collector, but if you ask me, he's nothing more than a pack rat. 他自称收藏家，可你要问我，他说白了就是不舍得扔东西。