| − | The '''coccyx''' is "a small, triangular bone at the lower end of the vertebral column, formed by the fusion of four rudimentary vertebrae and articulating with the [[sacrum]]."<ref>[https://www.yourdictionary.com/coccyx Coccyx - definition], yourdictionary.com</ref> | + | The '''coccyx''' is "a small, triangular bone at the lower end of the vertebral column, formed by the fusion of four rudimentary vertebrae and articulating with the [[sacrum]]."<ref>[https://www.yourdictionary.com/coccyx Coccyx - definition], yourdictionary.com</ref> The coccyx is commonly referred to as the tailbone. |