A diaper pin is a small, pointed metal pin used to fasten diapers onto babies' clothes. However, there are various other terms for diaper pins, depending on the location and cultural background. For instance, in the UK, diaper pins are known as nappy pins or safety pins. In Australia and New Zealand, they are referred to as cloth nappy pins or nappy fasteners. In the United States, the term baby safety pin is also utilized. Additionally, some regions refer to them as diaper clips, corner grips, or simply pins. Regardless of the term used, diaper pins remain an essential tool for parents and caregivers when it comes to securing their infant's diaper securely.