What is State Trials?

Legal Definition
In English law, the term state trials primarily denotes trials relating to offences against the state. In practice it is a term often used of cases illustrative of the law relating to state officers or of international or constitutional law.
-- Wikipedia
Legal Definition
A work in thirty-three volumes octavo, contuining all English trials for offenses against the state and others partaking in. some degree of that character, from the ninth year of Hen. II. to the first of Geo. IV.
-- Black's Law Dictionary
Legal Definition
a term that is used for the trial of a political offence or a crime.
Legal Definition
A trial for a political offence.
-- Black's Law Dictionary