summit, peak, top, hilltop (topmost point or surface, especially of a mountain); summit (gathering or assembly of leaders); apex, acme
“La joven cruzó el Atlántico en 21 días a bordo de un catamarán con el objetivo de llegar a Madrid para participar en la Marcha por el Clima y en la Cumbre sobre Cambio Climático.” — The young lady crossed the Atlantic in 21 days aboard a catamaran with the goal of arriving in Madrid to participate in the March for Climate and the Climate Change Summit.
Synonyms: cima, pico, ápice, acmé
Inherited from Latin culminem, from Proto-Italic *kolamen, from Proto-Indo-European *kelH-. The sense of “gathering” is a calque of English summit. Doublet of culmen.