Definitions 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

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

• verb:   surmount with a pinnacle

  Example: "Pinnacle a pediment"

• verb:   raise on or as if on a pinnacle

  Example: "He did not want to be pinnacled"