Etymology: (1300–50; ME pinacle < MF < LL pinnāculum gable = L pinn(a) raised part of a parapet, lit., wing, feather +-āculum; see tabernacle)
2. (noun)acme, height, elevation, peak, pinnacle, summit, superlative, meridian, tiptop, top the highest level or degree attainable; the highest stage of development "his landscapes were deemed the acme of beauty"; "the artist's gifts are at their acme"; "at the height of her career"; "the peak of perfection"; "summer was at its peak"; "...catapulted Einstein to the pinnacle of fame"; "the summit of his ambition"; "so many highest superlatives achieved by man"; "at the top of his profession"
4. (verb)pinnacle surmount with a pinnacle "pinnacle a pediment"
5. (verb)pinnacle raise on or as if on a pinnacle "He did not want to be pinnacled"
Definition of 'pinnacle'
Webster Dictionary
1. (noun)pinnacle an architectural member, upright, and generally ending in a small spire, -- used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire, and the like. Pinnacles may be considered primarily as added weight, where it is necessary to resist the thrust of an arch, etc
2. (noun)pinnacle anything resembling a pinnacle; a lofty peak; a pointed summit
3. (verb)pinnacle to build or furnish with a pinnacle or pinnacles