1. The highest point or peak of something; the apex or summit.
Usage: formal or literary; often used in architecture or geology
2. In architecture, the gable or triangular upper portion of a building's front.
Usage: technical; archaic or specialized

Examples

• The fastigium of the mountain was shrouded in clouds.
• The architect designed an ornate fastigium for the classical temple.
• At the fastigium of his career, he received the highest honor.
• The fastigium of the roof was decorated with intricate stonework.
• She reached the fastigium of her ambitions after decades of work.