The courts
testimony
Statements made under oath by a witness, in court, in a deposition, or before a congressional committee. Lying in it is perjury.
In full
Testimony is evidence given by a person, as distinct from documents and physical exhibits. In court it is subject to cross-examination, which is the mechanism the system relies on to test it. Congressional testimony is usually sworn and carries the same exposure to perjury, which is why witnesses so often appear with counsel.
Also written as: witness, testify
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A plain-language explanation for civic education, not legal advice. When in doubt, the official source named above controls.