“Impeachment”

Jurisdiction: United States United States

1. The process of calling a witness's testimony into doubt. For example, if the attorney can show that the witness may have fabricated portions of his testimony, the witness is said to be "impeached;" 2. The constitutional process whereby the House of Representatives may "impeach" (accuse of misconduct) high officers of the federal government, who are then tried by the Senate.

Source: Glossary of Legal Terms, United States Courts