›to officially accuse someone in a court of law of committing a crime: Trespassers will be prosecuted.prosecute sb for sthIn this area, 26 people have been prosecuted for mortgage fraud in the past three years.
›if a lawyer prosecutes a case, they try to prove that a person accused of committing a crime is guilty: prosecute a case/lawsuitThe leader of the Justice Department team prosecuted a landmark lawsuit against tobacco companies.