From , translating .

sanctum sanctorum

1. The Holy of Holies in the Jewish temple.
2. A person's most private retreat or sanctuary.
   • 1864, Charlotte Bronte, The Professor:

     Mdlle Reuter turned her eye laterally on me, to ascertain, probably, whether I was collected enough to be ushered into her sanctum sanctorum.

• French: saint des saints
• German: Allerheiligste
• Russian: свята́я святы́х
• Spanish: sanctasanctórum

• Russian: убе́жище
• Spanish: sanctasanctórum