1 عمومی:: منتهی درجه، برج، اوج، قله نوك تیز، راس
شبکه مترجمین ایران
1 general:: noun highest point; the peak: Today he is at the pinnacle of success.
Simple Definitions
2 general:: noun VERB + PINNACLE reach He had reached the pinnacle of his military career. PREP. at the ~ of She is at the pinnacle of her profession.
Oxford Collocations Dictionary