prosecution
/ˌprɑːsɪˈkjuːʃən/
noun
plural -tions
the act or process of holding a trial against a person who is accused of a crime to see if that person is guilty [count]
the prosecution :the side of a legal case which argues that a person who is accused of a crime is guilty :the lawyer or lawyers who prosecute someone in a court case
[noncount] formal :the act of doing or continuing to do something - usually + of