›the examination in a court of law of the facts of a case to decide whether a person is guilty of a crime or responsible for an injury to another person: [C]a criminal/civil trial[U]The case will soon go to trial (= begin).[U]She must still stand trial (= be judged in a court of law).on trial›If someone is on trial, the case in which that person's guilt is being judged has begun: He was on trial for assault and robbery.