洞窟cave; cavern; grotto
Noun
巣窟den; haunt; hangout; nest; lair
Noun
窟cave; cavern; grotto; dwelling made in a cave; house carved into rock
Noun
石窟cavern; grotto; rock cave
Noun
魔窟den of vice; rogue's den; brothel; red-light district
Noun
洞窟熊cave bear (extinct, Ursus spelaeus)
Noun