Black's Law Dictionary (2nd edition)dictionaries

Fide-Jussor

In Roman law. A guarantor; one who becomes responsible for the payment of another’s debt, by a stipulation which binds him to dlscharge it if the prin-cipal debtor fails to do so. Mackeld. Rom. Law, § 452 ; 3 Bl. Comm. 108

Source: Black’s Law Dictionary 2nd Ed (1910)