軸じく椎つい

noun

axis (second cervical vertebra)

Anatomical term for the second cervical vertebra, which allows rotation of the head. Used in medical and biological contexts.

• 軸じく椎ついは第だい二に頸けい椎ついとも呼よばれ、頭あたまの回かい旋せんを可か能のうにする。

  The axis, also called the second cervical vertebra, enables rotation of the head.