The triskle (triskele, triskelion, trisquele or tryfot) is a Celtic symbol that represents the life main triads in eternal movement and balance, like birth, life and death, body, mind and soul or sky, sea and earth. It is a kind of a three points star, usually curved, giving grace, movement and fluidity to the image.
The Celtic shield is often used to ward off evil spirits, and also for protection. Many people across the world have received tattoos or talismans of this object so that they can do this. Usually in this symbol it is always square, possibly to represent the 4 elements, earth, air, fire, and water. Sometimes in Celtic artwork you will see this symbol drawn in more detail with many more knots or more complex. This is easily seen throughout ancient Mesopotamia.:
Celtic Triscele: The Triscele was a sacred symbol to the Celtic People. It represents the eternal rhythm of life that we are all a part of. This ancient symbol adorned their most sacred places representing the trinity of life, most significantly, it represents the Goddess in all her forms ~ Maiden, Mother & Crone.