A more thorough explanation:

A fair trial is a legal proceeding that is conducted by an impartial and unbiased court or tribunal, following regular procedures. It is especially important in criminal cases, where the defendant's constitutional and legal rights must be respected.

For example, a fair trial would ensure that the defendant is presumed innocent until proven guilty, has the right to legal representation, and is given the opportunity to present evidence and cross-examine witnesses. The judge or jury must also be impartial and not have any personal interest or bias in the case.

Another example of a fair trial is one where the defendant is not subjected to any form of coercion or duress, and is given a reasonable opportunity to prepare their defense. The trial must also be conducted in a public forum, where the proceedings are open to the public and the media.

Overall, a fair trial is essential to ensure that justice is served and that the rights of the accused are protected. It is a fundamental principle of the legal system in many countries around the world.