Halfproof
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In the civil law. Proof by one witness, or a private instrument. Hallifax, Civil Law, b. 3, c. 9, no. 25; 3 Bl. Comm. 370. Or prima facie proof, which yet was not sufficient to found a sentence or decree.
Defined under Half in Black's Law Dictionary.