testimony (testimonies plural )
1 n-var In a court of law, someone's testimony is a formal statement that they make about what they saw someone do or what they know of a situation, after having promised to tell the truth.
His testimony was an important element of the Prosecution case...
2 n-uncount If you say that one thing is testimony to another, you mean that it shows clearly that the second thing has a particular quality.
This book is testimony to a very individual kind of courage.