Plenary confession
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A full and complete confession. An admission or confesssion, whether in civil or criminal law, is said to be "plenary" when it is, if believed, conclusive against the person making it. Best, Ev. 664; Rose. Crim. Ev. 39.
Defined under Plenary in Black's Law Dictionary.