The Collaborative International Dictionary of English v.0.48:

Lampoon \Lam*poon"\, v. t. [imp. & p. p. Lampooned; p. pr. &
   vb. n. Lampooning.]
   To subject to abusive ridicule expressed in a work of art; to
   make (a person, behavior, or institution) the subject of a
   lampoon.
   [1913 Webster +PJC]

         Ribald poets had lampooned him.          --Macaulay.

   Syn: To libel; defame; satirize; lash.
        [1913 Webster]