The Batcave, for Batman (4)
I believe the answer is:
lair
(Other definitions for lair that I've seen before include "Rail about wild animal's home" , "animal refuge" , "Secret base" , "A nautical hail" , "Habitation of a wild animal" .)
I believe the answer is:
lair
(Other definitions for lair that I've seen before include "Rail about wild animal's home" , "animal refuge" , "Secret base" , "A nautical hail" , "Habitation of a wild animal" .)