Definitions:

1. a dramatic or musical entertainment noun
   • They listened to ten different performances before deciding the winner.
2. any recognized accomplishment noun
   • They admired the athlete's performance under stress.
3. process or manner of functioning or operating noun
   • The performance of the engine is great.
4. the act of performing noun
   • I always got nervous before performance.
5. the act of presenting a play, a piece of music, or other entertainment noun
   • We congratulated the band on their performance at the rehearsal.

Synonyms:

• carrying into action
• carrying out
• execution
• operation
• public presentation