testimonial

Concise Oxford English Dictionary © 2008 Oxford University Press:
testimonial /ˌtɛstɪˈməʊnɪəl/

▶noun

• 1 a formal statement testifying to someone's character and qualifications.

• 2 a public tribute to someone.

  ■ (in sport) a game or event held in honour of a player, who receives part of the income generated.