pinnacle Definition

pinnacle
noun

1. A slender spire crowning a buttress, gable, roof or tower.
2. A rocky peak.
3. A high point of achievement.

Example: the pinnacle of her success
Thesaurus: height, top, peak, apex, summit, zenith, acme, apogee.

verb pinnacled, pinnacling

1. To be the pinnacle of something.
2. To set something on a pinnacle.
3. To provide something with a pinnacle or pinnacles.

Etymology: 14c: from Latin pinnaculum, diminutive of pinna feather.