pignorative contract

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
PIGNORATIVE CONTRACT, civ. law. A contract by which the owner of an estate 
engages it to another for a sum of money, and grants to him and his 
successors the right to enjoy it, until he shall be reimbursed, voluntarily, 
that sum of money. Poth. h.t. 
    

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