del credere

from The Century Dictionary.

• noun An Italian mercantile phrase, similar in import to the English guaranty or the Scotch warrandice.

from the GNU version of the Collaborative International Dictionary of English.

• (Mercantile Law) An agreement by which an agent or factor, in consideration of an additional premium or commission (called a del credere commission), engages, when he sells goods on credit, to insure, warrant, or guarantee to his principal the solvency of the purchaser, the engagement of the factor being to pay the debt himself if it is not punctually discharged by the buyer when it becomes due.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adverb business Engaging, when selling goods on credit, to guarantee to the principal that the purchaser is solvent. The seller is otherwise responsible for the debt.