sanctum /sangkˈtəm/

1. (esp in the phrase inner sanctum) a sacred place
2. A (very) private room

sanctum sanctorum noun

1. The holy of holies, the inner chamber of the Jewish tabernacle
2. Any specially reserved retreat or room (informal)

• bed of justice
• bed of nails
• bed of roses
• be done
• be done with
• Bedouin
• Bedouins
• black velvet
• black-visaged
• black vomit
• black walnut
• blackwash
• blackwashes
• Black Watch
• black water
• blackwater
• blackwater fever
• blackwater fevers
• blackwaters
• black widow
• black widows
• blackwood
• blackwoods
• blad
• bladded