den

1. N-COUNT A den is the home of certain types of wild animals such as lions or foxes. 獸窩

2. N-COUNT Your den is a quiet room in your house where you can go to study, work, or relax without being disturbed. (學習、工作或放松的) 私室[美國英語]

The silver-haired retiree sits in his den surrounded by photos of sailing boats. 這位銀發退休者坐在他的四壁掛滿了航船照片的私室裡。

3. N-COUNT A den is a secret place where people meet, usually for a dishonest purpose. 進行秘密活動的場所

I could provide you with the addresses of at least three illegal drinking dens. 我能曏你提供至少3個秘密非法酒館的地址。

4. N-COUNT If you describe a place as a den of a particular type of bad or illegal behaviour, you mean that a lot of that type of behaviour goes on there. (乾壞事或違法活動的) 聚集地

...this den of iniquity called New York City. …這個稱作紐約市的罪惡之地。