cognisance of pleas

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
COGNISANCE OF PLEAS, Eng. law. A privilege granted by the king to a city or 
town, to hold pleas within the same; and when any one is impleaded in the 
courts at Westminster, the owner of the franchise may demand cognisance of 
the plea. T. de la Ley. 
    

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