This tattoo symbol is commonly known as a triskele, or triskelion, symbol. It is an ancient symbol composed of three interlocked spirals or three bent human legs. It is an ancient Irish and Celtic symbol that has been used for centuries to represent a variety of meanings, though commonly associated with motion, progress, energy, and competition. It symbolizes the threefold nature of existence – mind, body, and spirit as well as the three stages of life – growth, transformation, and reincarnation. It can also represent eternal life, the power of three, or concepts of harmony, balance, and unity.