A pacifier is a rubber, plastic, or silicone nipple substitute given to an infant to suckle upon between feedings to quiet its distress by satisfying the need to suck when it does not need to eat. Pacifiers normally have three parts, an elongated teat, a mouth shield, and a handle. The mouth shield is large enough to prevent the child from attempting to take the pacifier into its mouth, and so forecloses the danger that the child will swallow then choke on it.