l]
noun, verb, -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. | 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. |
| 5. | to place on or as on a pinnacle. |
| 6. | to form a pinnacle on; crown. |

pin·na·cle (pĭn'ə-kəl) n.
[Middle English, from Old French, from Late Latin pinnāculum, diminutive of Latin pinna, feather; see pet- in Indo-European roots.] |