She had lived in the flat for thirty years and was a veritab

She had lived in the flat for thirty years and was a veritable magpie at hoarding.
at hoarding到底是啥意思,

magpie 有三个含义
①鹊（喜欢收集东西,尤其是发光的,如烟头,所以经常导致自己的巢被烧毁）
②比喻：喜欢收集东西的人
③喋喋不休的人
这里指一位老太太喜欢收集东西,第一种意思可以排除
at hoarding意为“在贮藏,储存方面”,在②和③中选择前者,使句子没有歧义