1. a lofty peak.
2. the highest or culminating point, as of success, power, fame, etc.: the pinnacle of one's career.
3. any pointed, towering part or formation, as of rock.
4. Architecture. a relatively small, upright structure, commonly terminating in a gable, a pyramid, or a cone, rising above the roof or coping of a building, or capping a tower, buttress, or other projecting architectural member. verb (used with object), pinnacled, pinnacling.
5. to place on or as on a pinna
"ridges can be pinnacled."
"tabernacles can be pinnacled."
"rooftopses can be pinnacled."
"porticos can be pinnacled."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.