pinnacle

Universal Words noun 1 [usuallysing.] ~ of sth the most important or successful part of sth: the pinnacle of her career * He spent more than twenty years at the pinnacle of his profession. * Formula One is the pinnacle of motor racing. 2 a small pointed stone ornament built on the roof of a building: We could just make out the pinnacles of the cathedral in the distance. 3 a high pointed piece of rock, especially at the top of a mountain