A hobnail is a small, metal nail with a thick head, commonly used to reinforce the soles of shoes or boots. These nails provide extra traction and durability, making them especially useful for work boots and outdoor footwear. The term "hobnail" is often associated with traditional footwear, such as military boots or cobbler-made shoes. Hobnails are typically made of steel and are driven into the sole of the shoe, creating a rugged surface that helps prevent slipping. This design has been used for centuries, dating back to ancient times, and remains popular in various types of footwear today, including hiking boots and safety shoes.