A joint where round end of a bone suits into the cavity of another bone. The hip joint is a ball-and-socket joint.
an easily going joint by which a sphere on mind of 1 bone meets into a rounded cavity inside various other bone
- a combined that may rotate within a plug
Its lower end was fitted with a ball-and-socket joint to enable it to be laid in any direction, and beneath this is a screw which can be screwed by means of a small lever into a piece of wood embedded in the side of a trench.