"The truth, the whole truth and nothing but the truth, so help me God."
This is part of the oath that witnesses take before giving testimony in a court. We think we know what the word "truth" means. But the definition we, the people, use is the common and normal meaning of the word that we have been taught. What is the actual meaning of the word "truth" used by the courts, i.e., by attorneys and judges? Have the attorneys, judges and professors of law changed the meaning of the word "truth"? For the answers to these questions, one need only turn to various dictionaries.