What is to make the subject of a lawsuit; to contest in law; to prosecute or defend by pleadings, exhibition of evidence, and judicial debate in a court; as, to litigate a cause called?

litigate — To make the subject of a lawsuit; to contest in law; to prosecute or defend by pleadings, exhibition of evidence, and judicial debate in a court; as, to litigate a cause. (Webster's 1913.)

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