sham plea

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
SHAM PLEA. One entered for the mere purpose of delay; it must be of a matter 
which the pleader knows to be false; as judgment recovered, that is, that 
judgment has already been recovered by the plaintiff for the same cause of 
action. 
     2. These sham pleas are generally discouraged, and in some cases are 
treated as a nullity. Barn. & Ald. 197, 199; 5 Id. 750; 1 Barn. & Cr. 286; 
Archb. Civ. Pl. 249; 1 Chit. Pl. 401. 
    

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