ciborio

Noun

 * 1)  ciborium covered receptacle for holding the consecrated wafers
 * 2) dome

Etymology
, a borrowing from

Noun

 * 1)  ciborium
 * 2) a fixed vaulted canopy over a Christian altar, supported on four columns
 * 3) a covered receptacle for holding the consecrated wafers of the Eucharist