lair

lair
/leə(r); lɛr/ n
1 sheltered place where a wild animal regularly sleeps or rests; den （野兽的）巢穴, 窝.
2 (fig 比喻) person's hiding place （人的）藏身处
    The kidnappers' lair was an old farm in the hills. 绑架者的藏身处是山里的一座旧农场.

牛津英汉双解词典