libellant

from The Collaborative International Dictionary of English v.0.48
Libelant \Li"bel*ant\ (-ant), n.
   One who libels; one who institutes a suit in an
   ecclesiastical or admiralty court. [Written also
   {libellant}.] --Cranch.
   [1913 Webster]
    
from Bouvier's Law Dictionary, Revised 6th Ed (1856)
LIBELLANT. The party who fires a libel in a chancery or admiralty case, 
corresponds to the plaintiff in actions in the common law courts, is called 
the libellant. 
    

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