It's possible that you might be referring to one of the following:
* "Witness tampering": This is a serious legal offense where someone tries to influence or intimidate a witness to change their testimony or prevent them from testifying.
* "Witness intimidation": This is a specific type of witness tampering that involves threatening or using force against a witness to discourage them from cooperating with authorities.
* "Witness protection": This is a program designed to safeguard witnesses who are at risk of retaliation due to their testimony in criminal cases.
If you can provide more context or clarify the situation where you encountered this term, I might be able to provide a more accurate answer.