What is the name of the junction where the pubic bones meet?

The correct terminology for the junction where the pubic bones meet is the "symphysis pubis." This is a specific type of cartilaginous joint that serves as a point of connection between the left and right pubic bones at the front of the pelvis. The symphysis pubis plays an essential role in providing structural stability and allowing for slight movement during activities such as walking, as well as during childbirth when the pelvis may need to accommodate for the passage of the baby.

Using the term "symphysis" indicates that the joint is formed by hyaline cartilage, which is characteristic of symphyseal joints. The name "pubis" clearly connects it to the pubic bones specifically. This joint can also be referred to as the pelvic symphysis, which is a synonymous term, though "symphysis pubis" is the more precise anatomical name commonly used in medical and anatomical contexts.

The other terms presented do not accurately represent this anatomical feature: "pubic joint" is too vague and does not specify the type of joint; "pelvic symphysis" while related, is less commonly used when specifically referring to the junction of the pubic bones; and "pubis interlock" is not a