Formerly convicted. In criminal law . A plea by a criminal in bar to an indictment that he has been formerly convicted of the same identical crime. 4 Bl. Comm. 336; 4 Steph. Comm. 404; Simco v. State, 9 Tex. App. 348; U. S. v. Olsen (D. C.) 57 Fed. 582; Shepherd v. People, 25 N. Y. 420.