capitate bone
Anatomical term for the largest carpal bone in the distal row of the wrist.
有頭骨は手根骨の一つで、手首の中央に位置する。
The capitate bone is one of the carpal bones, located in the center of the wrist.
From 有頭 (yūtō, 'having a head') + 骨 (kotsu, 'bone'), referring to the bone's rounded head-like shape.