a high pointed piece of rock 尖锥形岩石 ■a small pointed turret built as an ornament on a roof (屋顶上作装饰的)小尖塔;尖顶 ■the most successful point; the culmination 顶峰,巅峰,极点,顶点 he had reached the pinnacle of his career. 他已经达到了事业的巅峰。
verb [with obj.](poetic/literary)
set on or as if on a pinnacle (诗/文)把…置于尖顶之上 ■form the culminating point or example of 构成…的巅峰,是…的典范
派生 pinnacled adjective 语源
Middle English: from Old French, from late Latin pinnaculum, diminutive of pinna 'wing, point'