sacrarium
noun
sa·crar·i·um sə-ˈkrer-ē-əm 
sa-,
sā-
plural sacraria sə-ˈkrer-ē-ə
sa-,
sā-
1
a
: sanctuary sense 1b
b
: sacristy
c
: piscina
2
: an ancient Roman shrine or sanctuary in a temple or a home holding sacred objects
Word History
Etymology
Medieval Latin, from Latin, shrine, from sacr-, sacer sacred
First Known Use
1727, in the meaning defined at sense 1a