pignoris capio

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
PIGNORIS CAPIO, ROM. civil law. The name given to one of the legis actiones 
of the Roman law. It consisted chiefly in the taking. of a pledge, and was 
in fact a mode of execution. It was confined to special cases determined by 
positive law or by custom, such as taxes, duties, rents, &c., and is 
comparable in some respects to distresses at common law. The proceeding took 
place in the presence of a praetor. 
    

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