LEARNit Dictionary
ball-and-socket joint
noun
/ˌbɔːl ən ˈsɒkɪt dʒɔɪnt/
UK
/ˌbɔːl ən ˈsɑːkɪt dʒɔɪnt/
US
1
a joint such as the hip joint at the top of the leg, in which a piece of bone in the shape of a ball moves inside a curved hollow part
مفصل گوی و کاسهای, مفصل کروی, مفصل گویگون