A more thorough explanation:

Definition: The witness box, also known as the witness stand, is the area in a courtroom where a witness stands or sits while giving testimony. It is usually a boxed area.

Example: During the trial, the witness was asked to take the oath and then take the witness stand. She walked to the witness box and sat down.

Explanation: The example illustrates how the witness box is the area where a witness sits or stands while giving testimony in a courtroom. The witness is usually asked to take an oath before giving testimony and then proceeds to the witness box.