#1 summit n. [acme, height, elevation, peak, pinnacle, superlative, meridian, tiptop, top] the highest level or degree attainable; the highest stage of development; "his landscapes were deemed the acme of beauty"; "the artist's gifts are at their acme"; "at the height of her career"; "the peak of perfection"; "summer was at its peak"; "...catap. wn
#2 summit v. [breast] reach the summit (of a mountain); "They breasted the mountain"; "Many mountaineers go up Mt. Everest but not all summit". wn
#3 summit n. [peak, crown, crest, top, tip] the top or extreme point of something (usually a mountain or hill); "the view from the peak was magnificent"; "they clambered to the tip of Monadnock"; "the region is a few molecules wide at the summit". wn
#4 summit n. [summit meeting] a meeting of heads of governments. wn
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