Source : Webster's Revised Unabridged Dictionary (1913)

Calumny \Cal"um*ny\, n.; pl. {Calumnies}. [L. calumnia, fr.
   calvi to devise tricks, deceive; cf. F. calomnie. Cf.
   {Challenge}, n.]
   False accusation of a crime or offense, maliciously made or
   reported, to the injury of another; malicious
   misrepresentation; slander; detraction. ``Infamous
   calumnies.'' --Motley.

         Be thou as chaste as ice, as pure as snow, thou shalt
         not escape calumny.                      --Shak.

Source : WordNet®

calumny
     n 1: a malicious attack [syn: {defamation}, {obloquy}, {traducement},
           {hatchet job}]
     2: an abusive attack on a person's character or good name [syn:
         {aspersion}, {slander}, {defamation}, {denigration}]