A pike is a long, pointed weapon that was commonly used by infantry in battles during the Middle Ages and the Renaissance. It typically consists of a wooden shaft, often around 10 to 20 feet long, with a sharp metal tip. Pikes were effective for keeping cavalry at bay and for forming defensive formations, such as the pike square. In addition to their military use, pikes are also the name of a type of freshwater fish, known for their elongated bodies and sharp teeth. The northern pike is one of the most well-known species, often found in North America and Europe. These fish are popular among anglers for their size and fighting ability when caught.