Lawsuit (noun)

1. A legal action brought in a court of law in which one party sues another for a redress of a grievance.
2. A process or instance of taking legal action.

Origin:

Mid 16th century: from law + suit.

Examples:

1. He filed a lawsuit against the company.
2. The lawsuit was settled out of court.
3. The lawsuit took years to resolve.
4. He is facing a lawsuit over copyright infringement.
5. The lawsuit was dismissed.