Impeding those who seek justice in a court (as by trying to influence or intimidate any juror or witness or officer of the court); can result in a finding of contempt of court WordNet 3.0 & Open English WordNet

Obstruction of justice, in United States jurisdictions, is an act that involves unduly influencing, impeding, or otherwise interfering with the justice system, especially the legal and procedural tasks of prosecutors, investigators, or other government officials. Wikipedia

The crime of interfering with law enforcement Wikipedia Disambiguation

Act of impeding investigation or courts Wikidata