The aspergillum, a sacred object used in Catholic worship, is typically a handheld brush with a long handle and a tuft of bristles. In liturgy, holy water is sprinkled using the aspergillum, a practice dating back centuries. Its symbolic meaning represents the cleansing and purifying power of God's grace. The aspergillum's action physically signifies the spiritual washing away of sin and the sanctification of persons and spaces. It’s an important instrument used in various Catholic rites.