巅，汉语一级字，读作巅（diān），一般指山顶，还有山巅，巅崖，顶部（如：树巅），头部（如：
巅疾）的意思。
(5)头部 [head]。如：巅疾（中医称头部疾患）
说文解字 字源字形
楷体名人书法吴通徵
草书韵会Wind sweep the summit.
Where there is height there is precipice.
The mountain tops are plainly visible from the village.
It is
the tops of the mountain that the lightning strikes.
While o'er yon cliff, whose pointed crags decay.