Definition of Autrefois acquit:
A special plea or defence that a defendant has previously been acquitted of the same (or substantially the same) offence, and cannot therefore be retried for that offence. Compare autrefois convict , double jeopardy.
Plea in bar that the defendant has previously been tried of the same (or practically the same) crime but was found not guilty by the court due to insufficient evidence. French for, previously acquitted.
Meaning of Autrefois acquit & Autrefois acquit Definition