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)

• cruise
• cruise control
• cruised
• cruise missile
• cruise missiles
• cruiser
• cruisers
• cruiserweight
• cruiserweights
• cruises
• cruiseway
• cruiseways
• cruisewear
• cruisewears
• cruisie
• cruisies
• cruising
• cruive
• cruives
• cruller
• crullers
• crumb
• crumb-brush
• crumb-brushes
• crumbcloth