apex

1 the highest part or point <she reached the apex of fame, only to find it wasn't what she expected> Synonyms acme, height, apogee, capstone, climax, crescendo, crest, crown, culmination, head, high noon, high tide, high-water mark, meridian, ne plus ultra, noon, noontime, peak, pinnacle, sum, summit, tip-top, top, zenithRelated Words bloom, blossom, flood tide, flower, glory, heyday, prime; cap, ceiling, roof; extreme, extremity, tip, vertex; high, highlight, highspotNear Antonyms abyss, base, foot; minimumAntonyms bottom, nadir, rock bottom

2 the last and usually sharp or tapering part of something long and narrow <the apex of the spear> Synonyms point, cusp, end, nib, nose, pike, tipRelated Words pinpoint; prong, tine; barb, jag, prickle, snag, spike, sticker