n.[C]

1. 頂，頂點
   at the apex of the mountain

   在山頂

2. 尖端
   the apex of the tongue

   舌尖

3. 【喻】頂峰；最高潮
   He reached the apex of power in the early 1930s.

   他在三十年代初達到了權力的頂峰。

4. 【美】【礦】脈尖，脈頂

n.

1. the top or highest part of something, especially one forming a point.
   ▸Botany  the growing point of a shoot.
2. the highest point of achievement.

v.