신켄, or "Shinken," refers to a traditional Japanese sword that is made for practical use rather than just for display. These swords are crafted with great attention to detail and are often made from high-quality steel. The term "Shinken" translates to "true sword," emphasizing its functionality and authenticity in martial arts. In the context of martial arts, Kendo practitioners often use Shinken during advanced training or competitions. The sword is designed to be sharp and effective, allowing for realistic practice. However, due to its potential danger, Shinken is typically reserved for experienced martial artists who understand the risks involved.