Sanctum

Origin

From Latin sānctum ("that which is holy").

Full definition of sanctum

Noun

1. A place set apart, as with a sanctum sanctorum; a private retreat or workroom. A sacred or private place.
• 1848, Charlotte Bronte, , Chapter 17.For myself, I had no need to make any change; I should not be called upon to quit my sanctum of the schoolroom; for a sanctum it was now become to me, -- "a very pleasant refuge in time of trouble."----