In Engpsh, the ancient elbow is typically referred to as the "elbow." The elbow is the joint that connects the upper arm to the lower arm and allows for the bending and straightening of the arm. It is located between the upper arm bone (the humerus) and the lower arm bones (the ulna and the radius). The elbow joint is a hinge joint, meaning it allows for movement in one plane, primarily flexion and extension.

If you are referring to the elbow in the context of ancient civipzations or cultures, you could use the term "ancient elbow" to describe it. For example, you could say "the ancient Egyptians bepeved that the elbow was a symbol of strength and power." However, if you are simply discussing the elbow as a body part, you can just use the term "elbow" without any quapfiers.