noun
acetabulum; cotyloid cavity
Anatomical term for the hip socket. In modern medical Japanese, 寛骨臼 (かんこつきゅう) is the standard term; 髀臼 is a rarer synonym.
See also: 寛骨臼
髀臼は大腿骨頭を受け入れる寛骨のくぼみである。
The acetabulum is the socket in the hip bone that receives the head of the femur.