A safety pin is a type of fastener that is used to hold fabric together by passing through it. Synonyms for the word "safety pin" include a diaper pin, nappy pin, or a baby pin. Similar to safety pins, these pins are designed with sharp angled ends that pierce through the fabric and secure it in place. Another synonym for a safety pin is a kilt pin, which is a type of brooch used to fasten traditional Scottish kilts. Apart from these synonyms, safety pins also come in a variety of sizes and designs such as shirt pins, hijab pins, and scarf pins, all of which serve to hold fabric together in different ways.