[noun] [C] - a person who saw something happen, for example a crime or an accidentAccording to an eyewitness account, the thieves abandoned their vehicle near the scene of the robbery and then ran off.Does an eyewitness have a moral obligation to society to come forward?
EYEWITNESS
Meaning of EYEWITNESS in English
Cambridge English vocab. Кембриджский английский словарь. 2012