Definition

1. Noun:
   • A stone that forms the top of a wall or building: A capstone is the final, topmost stone placed in a structure, such as a wall or arch, often serving to lock the other stones in place and complete the construction.
   • A final touch; a crowning achievement; a culmination: Figuratively, a capstone is the culminating or finishing element of an effort, project, or period, representing its highest point or greatest achievement.

Usage Examples

• Literal (Architectural):

  • The workers carefully lowered the granite capstone onto the pillar.
  • The ancient arch is held together by its central capstone.

• Figurative (Achievement):

  • Winning the championship was the capstone of her athletic career.
  • This research project serves as the capstone to his years of study.

Advanced Usage

• "Capstone project": A culminating and usually integrative academic or professional project undertaken in the final stage of a program of study.

  • All seniors must complete a capstone project demonstrating their mastery of the subject.

• "Capstone experience": A final, synthesizing experience in an educational program.

  • The internship was designed as a capstone experience for the degree.

Variants and Related Words

• Coping stone / Copestone: A synonym, especially in British English, for the top stone of a wall.
• Keystone: A central stone at the summit of an arch, locking the whole together. While similar, a is specifically for arches, whereas a has broader architectural and figurative uses.
• Crowning: (adj.) Serving as a final, triumphant touch (e.g., a achievement).

Synonyms

• Culmination: The highest or climactic point.
• Pinnacle: The most successful point; the peak.
• Acme: The point at which someone or something is best, perfect, or most successful.
• Crown: The top or highest part, often representing an achievement.
• Finale: The last part of a piece of music, entertainment, or series of events.

Idioms and Phrases

• "The capstone of": Used to denote something as the ultimate achievement in a particular area.
  • Many consider this treaty to be the capstone of his diplomatic efforts.
• "To place/set the capstone on": To complete or perfect something.
  • The successful product launch set the capstone on a remarkable year for the company.

Noun

1. a stone that forms the top of wall or building
2. a final touch; a crowning achievement; a culmination