[noun] (architecture) a slender upright spire at the top of a buttress of tower
[noun] the highest level or degree attainable; "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"; "...catapulted Einstein to the pinnacle of fame"; "the summit of his ambition"; "so many highest superlatives achieved by man"; "at the top of his profession" Synonyms:acme, height, elevation, peak, summit, superlative, top
[noun] a lofty peak
[verb] surmount with a pinnacle; "pinnacle a pediment"
[verb] raise on or as if on a pinnacle; "He did not want to be pinnacled"