sa·crar·i·um 
(sə-krârē-əm, să-, sā-)
(sə-krârē-əm, să-, sā-)n. pl. sa·crar·i·a (-ē-ə)
Ecclesiastical
Ecclesiastical
1. The sanctuary or sacristy of a church.
2. Piscina.
[Medieval Latin sacrārium, from Latin, shrine, from sacer, sacr-, sacred; see SACRED.]