Flea side

The plea side of a court is that branch or department of the court which entertains or takes cognizance of civil actions and suits, as distinguished from Its criminal or crown department. Thus the court of king's bench is said to have a plea side and a crown or criminal side; the one branch or department of it being devoted to the cognizance of civil actions, the other to criminal proceedings and matters peculiarly concerning the crown. So the court of exchequer is said to have a plea side and a crown side; the one being appropriated to civil actions, the other to matters of revenue.

Brown.