A vessel or device used for sprinkling holy water during special blessings. The ordinary type is a metallic rod with a bulbous tip which absorbs the holy water and discharges it at the motion of the user?s hand. Found on http://archstl.org/becomingcatholic/page/catholic-glossary
An aspergillum (less commonly, aspergilium or aspergil) is a liturgical implement used to sprinkle holy water. It comes in two common forms: a brush that is dipped in the water and shaken, and a perforated ball at the end of a short handle. Some have sponges or internal reservoirs that dispense holy water when shaken, while others must periodicall... Found on http://en.wikipedia.org/wiki/Aspergillum