acetabulum
/ˌæsəˈtæbjələm/
noun
The socket of the hipbone, into which the head of the femur fits.
The articulation between the head of the femur and the acetabulum form the hip joint.
noun
The socket of the hipbone, into which the head of the femur fits.
The articulation between the head of the femur and the acetabulum form the hip joint.