Aspergillum (noun)
as-per-jill-um
a brush or instrument for sprinkling holy water; aspersorium.
1640–50; New Latin, equivalent to Latin asperg(ere) to besprinkle + -illum diminutive suffix
Example sentences
“The brush used for sprinkling is an aspergill (aspergillum), or aspersoir, and the vessel for this water an aspersorium.”