1 Height - usually the largest - a mountain that serves as vertex divide between countries. The word Summit comes from the Latin noun 'peak, cúlminis': top. Synonyms: height, Apex, Crest, Crown, crater, Crest, culmination, height, divide, fastigio, lomo, turning points, peak, Pinnacle, auction, vertex. Antonyms: abyss, barranco, channel, cañada, Canyon, Riverbed, concavity, depression, dolina, trench, hollow, hoya, sima, tajo, Valley. 2. ( figuratively ) Originally, the meeting of Heads of State of two ideologically opposed powerful countries: United States of America and the former Soviet Union. It was 'the' Summit. Subsequently, meetings of leaders of any number of countries. It is now 'a' Summit.