pinnacle /pin-uh-kuhl/ Pronunciation noun, verb, -cled, -cling.
–noun
1. a lofty peak.
2. the highest or culminating point, as of success, power, fame, etc.: the pinnacle of one’s career.
3. any pointed, towering part or formation, as of rock.
4. Architecture. a relatively small, upright structure, commonly terminating in a gable, a pyramid, or a cone, rising above the roof or coping of a building, or capping a tower, buttress, or other projecting architectural member.
–verb (used with object)
5. to place on or as on a pinnacle.
6. to form a pinnacle on; crown.