Definition of Fraud on Court
A scheme to interfere with judicial machinery performing task of impartial adjudication, as by preventing opposing party from fairly presenting his case or defense. Finding of fraud on the court is justified only by most egregious misconduct directed to the court itself such as bribery of a judge or jury to fabrication of evidence by counsel and must be supported by clear, unequivocal and convincing evidence. In re Coordinated Pretrial Proceedings in Antibiotic Antitrust Actions, C.A.Minn., 538 F.2d 180, 195. It consists of conduct so egregious that it undermines the integrity of the judicial process. Stone v. Stone, Alaska, 647 P.2d 582, 586.
That's the definition of Fraud on Court in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.