A binky, commonly known as a pacifier, is a small, nipple-shaped device made of rubber, plastic, or silicone. It is designed for infants to suck on, providing comfort and soothing them when they are fussy or upset. Binkies can help satisfy a baby's natural sucking reflex, which is important for their development. Parents often use binkies to help babies fall asleep or calm down during stressful situations. While they can be beneficial, it's essential to monitor their use, as prolonged reliance on a pacifier may lead to dental issues or affect speech development. Regular cleaning and proper usage are also important for hygiene.