In law, a witness is someone who, either voluntarily or under compulsion, provides testimonial evidence, either oral or written, of what they know or claim to know.
Heinrich Buscher [de] as a witness during the Nuremberg Trials
These drawings were taken from life in 1758. From left to right, top row: 1. Interpreter, Rhowangee Sewagee. 2. Judge of the Hindoo Law, Antoba Crustnagee Pundit. 3. Hindoo Officer, Lellather Chatta Bhutt. From left to right, bottom row: 4. Officer to the Mooremen, Mahmoud Ackram of the Codjee order or priesthood of the cast of Moormens. 5. Judge of the Mohomedan Law, Cajee Husson. 6. Haveldar, or summoning Officer, Mahmound Ismael'.