1. the highest points of mountains or hills
2. the highest levels or degrees of something
3. meetings between heads of government or other high-level officials

Examples

• The climbers reached the summits of three different peaks.
• Snow covered the summits of the distant mountains.
• She achieved the summits of success in her career.
• The two leaders held summits to discuss trade agreements.
• Economic summits bring together world leaders annually.
• The summits of the hills were visible through the fog.
• These summits represent the highest points in the region.