noun
brain surgery; neurosurgery
Refers to the surgical specialty or the act of operating on the brain. Often used in medical contexts or to describe a doctor's specialty.
彼は脳外科の専門医です。
He is a specialist in brain surgery.
脳外科手術は非常に難しい。
Brain surgery is extremely difficult.
Compound of 脳 (のう, 'brain') and 外科 (げか, 'surgery').