nihil habet

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
NIHIL HABET. The name of a return made by a sheriff, marshal, or other 
proper officer, to a scire facia.9 or other writ, when he has not been able 
to, serve it on the defendant. 5 Whart. 367. 
     2. Two returns of nihil are in general equivalent to a service. Yelv. 
112; 1 Cowen, 70; 1 Car. Law Regags. 491; 4 Blackf. 188; 2 Binn. 40. 
    

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