Useless fact
What is the metal prong on a belt buckle called?
The metal prong of a belt buckle that passes through the holes of a strap to secure it is called a tongue.
The humble belt buckle has been an essential fastening device for thousands of years, dating back to ancient Roman and military attire. While modern wearers use belts daily, few people know the specific anatomical terms for the buckle components. The outer frame that holds the structure is simply called the frame, but the pivoting metal prong that passes through the leather strap to secure the fit is formally known as the tongue. Historically, buckles were crafted by specialized artisans called bucklers, and their designs evolved alongside personal fashion. Today, dictionaries like Merriam-Webster and Collins preserve this specific definition of a tongue, distinguishing it from its biological counterpart. Although most people simply refer to it as the pin or prong, the term tongue remains the official designation in the manufacturing, leatherworking, and fashion industries, serving as a testament to the longevity of traditional terminology in everyday objects.
Why this is true — The term is defined in major dictionaries like Merriam-Webster and Collins as the pin of a buckle that passes through a strap.
Sources
- Diccionario de la lengua española Real Academia Española