Definition of "Pinnacle" :

noun: (architecture) a slender upright spire at the top of a buttress of tower

noun: a lofty peak

noun: the highest level or degree attainable; the highest stage of development

"...catapulted Einstein to the pinnacle of fame."

verb: raise on or as if on a pinnacle

"He did not want to be pinnacled."

verb: surmount with a pinnacle

"Pinnacle a pediment."