a claim or complaint against somebody that a person or an organization can make in court He filed a lawsuit against his record company. See related entries: Legal processesExtra examples She plans to defend the lawsuit vigorously. The company now faces several lawsuits over its failure to protect its employees. The two companies have settled the lawsuit. They are seeking damages in a lawsuit. They have agreed to drop their lawsuit against the Dutch company. a lawsuit against her former husband a lawsuit over a disputed estate He faces a lawsuit from a man he punched in a late-night brawl last year. The opening of the factory was delayed because of a lawsuit brought by an environmental group.