the world > life > the body > structural parts > bone or bones > bony support for limbs > pelvis > [noun] > coccyx (3)
The small triangular bone appended to the point of the sacrum and forming the termination of the spinal column in humans, formed by the…
Any of various bones of the rump or hindquarters, spec. (a) a bone at the base of the spine; the coccyx, sacrum, or (in birds) the pygostyle; †(b) a…