The Celtic Shield Knot is a symbol of defense, protection, and strength that has been revered for centuries. Like all Celtic knots, it forms a continuous, never-ending line, symbolizing eternity and interconnectedness. It features four different quadrants, that can be rounded or squared, intended to resemble a shield.
It is primarily meant to be used to invoke protection against evil spirits, illness, and misfortune, making it a talisman of strength and safety. For these reasons, it has was often adorned on shields or flags on the battlefield. The knot was used in Celtic, Norse, and Viking traditions and still remains popular in modern art, jewelry, and tattoo imagery.
