Definition & Meaning of "pacifier"in English

What is a "pacifier"?

A pacifier is a soothing device for infants that helps satisfy their natural instinct to suck. It consists of a nipple made from rubber or silicone, attached to a shield or handle. Pacifiers offer comfort, calming effects, and a sense of security to babies by providing a non-nutritive sucking experience. They can assist in soothing a fussy or colicky baby, promoting relaxation, and aiding in sleep.