unica taxatio

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
UNICA TAXATIO, practice. The ancient language of a special award of venire, 
where of several defendants, one pleads, and one lets judgment go by 
default, whereby the jury, who are to try and assess damages on the issue, 
are also to assess damages against the defendant suffering judgment by 
default. Lee's Dict. h.t. 
    

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