(judaism) The innermost shrine of a tabernacle and temple; the holy of holies.
An inviolably private place.
The clubhouse was their sanctum sanctorum.
A place of utmost privacy and inviolability.
Origin of sanctum-sanctorum
- Late Latin sānctum sānctōrum (translation of Greek to hagion tōn hagiōn) (translation of Hebrew qōdeš haqqodāšîm) sānctum holy place sānctōrum genitive pl. of sānctum holy place
From American Heritage Dictionary of the English Language, 5th Edition