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Pronunciation: (pin'u-kul), [key]
n., v., -cled, -cling.

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. Archit.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. See illus. under imbrication.

1. to place on or as on a pinnacle.
2. to form a pinnacle on; crown.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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