1. the highest point or summit of a mountain

Examples

• The climbers reached the mountaintop after six hours of hiking.
• Snow covered the mountaintop even in summer.
• From the mountaintop, we could see for miles in every direction.
• The cabin was built near the mountaintop for the best views.
• Eagles often nest on remote mountaintops.
• The mountaintop was shrouded in clouds.
• They planted a flag on the mountaintop to mark their achievement.