The Valknut is a Viking symbol that is made up of three interlocking triangles that form a knot . It is believed that the name Valknut derives from the Old Norse words 'valr' (meaning 'death in combat') and 'knut' (meaning 'knot'), so its meaning could be related to death in the battle and the protection of warriors on their way to Valhalla, the place in Norse mythology where warriors killed in combat resided.
The Valknut is a symbol found on various Viking artifacts such as runestones, jewelry, and weapons, suggesting that it was an important symbol in Viking culture. In addition to its possible funerary and protective significance, some believe that the Valknut could also be related to the trinity of the Norse gods Odin, Thor, and Freyja, or to the cycle of life, death, and rebirth.
Today, the Valknut is widely used as a symbol of Viking culture and mythology on various products and items.