pinnacle

/ˈpi-ni-kəl/

Middle English pinacle, from Anglo-French, from Late Latin pinnaculum small wing, gable, from Latin pinna wing, battlement

noun

  1. an upright architectural member generally ending in a small spire and used especially in Gothic construction to give weight especially to a buttress

  2. a structure or formation suggesting a pinnacle; specifically : a lofty peak

  3. the highest point of development or achievement : acme

summit peak pinnacle climax apex acme culmination mean the highest point attained or attainable. summit implies the topmost level attainable. peak suggests the highest among other high points.

verb

  1. to surmount with a pinnacle

  2. to raise or rear on a pinnacle