A baptismal font is a special container that holds water used for a special ceremony called baptism. Baptism is when someone is welcomed into a special group of people who believe in a certain religion, like Christianity. The water in the baptismal font is used to wash someone and is a symbol that they are starting a new life with their chosen religion. The font is often a big bowl and can be made of different materials, like stone or bronze. It's usually found in churches, where the ceremony is held, and has a special place where people can come up to it and use the water for their baptism.