What is Nul Agard?

Legal Definition
No award. A plea to an action on an arbitration bond, when the defendant avers that there was no legal award made. 3 Burr. 1730; 2 Stra. 923.
-- Bouviers Law Dictionary
Legal Definition
No award. The name of a plea in an action on an arbitration bond, by which the defendant traverses the making of any legal award.
-- Black's Law Dictionary
Legal Definition
No award, a plea denying that an award was made, in an action on an arbitration bond.
-- Ballentine's Law Dictionary