Definition & Meaning of "third umpire"in English

Who is a "third umpire"?

A third umpire is an official in certain sports, such as cricket, who is responsible for reviewing decisions made by the on-field umpires using video footage and technology. The third umpire helps make accurate decisions, especially in situations where the on-field umpires may not be able to see the action clearly or need extra support. The third umpire plays a key role in ensuring fairness and precision during a game.