sanctum
[noun]
Synonyms: shrine, holy place, sanctorium, sanctuary

[TahlilGaran] English Synonym Dictionary ▲

sanc‧tum /ˈsæŋktəm/ noun [countable]
[Date: 1500-1600; Language: Late Latin; Origin: Latin sanctus; ⇒ saint]

1. inner sanctum a private place or room that only a few important people are allowed to enter – often used humorously:
Occasionally, she would be allowed into the inner sanctum of his office.

2. a holy place inside a temple

[TahlilGaran] Dictionary of Contemporary English ▲