testimonial
noun
[ ˌtɛstɪˈməʊnɪəl ]
• a formal statement testifying to someone's character and qualifications.
• (in sport) a game or event held in honour of a player, who typically receives part of the income generated.
• "a testimonial match"
Origin:
late Middle English: from Old French testimonial ‘testifying, serving as evidence’, from late Latin testimonialis, from Latin testimonium (see testimony).