noun
back of the head; occipital region
Anatomical term for the back part of the head. Used in medical, everyday, and descriptive contexts.
転んで後頭部を打った。
I fell and hit the back of my head.
後頭部に痛みがあります。
I have pain in the back of my head.
Compound of 後 (こう, 'back') + 頭 (とう, 'head') + 部 (ぶ, 'part'). The reading is on'yomi throughout.