1. [verb] (transitive) (legal) To start criminal proceedings against.
2. [verb] (transitive) (legal) To charge, try.
3. [verb] To seek to obtain by legal process.
4. [verb] (transitive) To pursue something to the end.
5. [verb] Conduct a prosecution in a court of law.
6. [verb] Bring a criminal action against (in a trial); 'The State of California prosecuted O.J. Simpson'.
7. [verb] Carry out or participate in an activity; be involved in; 'She pursued many activities'; 'They engaged in a discussion'.