1. I〔山の〕the top, the summit;〔切り立つ山頂〕the peak
    • 山の頂上に
    • at the top of the mountain
    • 遂に彼らは頂上を極めた
    • They gained the summit at last.
  1. II〔極点〕the peak
    • 彼は当時栄華の頂上にあった
    • He was at the peak of his prosperity then.
    • 物価が頂上に達した
    • Prices have hit the ceiling.
  1. 頂上会談a summit conference [talk]