Source : Webster's Revised Unabridged Dictionary (1913)

Lampoon \Lam*poon"\, n. [F. lampon a drinking song, fr. lampons
   let us drink, -- the burden of such a song, fr. lamper to
   guzzle, to drink much and greedily; of German origin, and
   akin to E. lap to drink. Prob. so called because drinking
   songs often contain personal slander or satire.]
   A personal satire in writing; usually, malicious and abusive
   censure written only to reproach and distress.

         Like her who missed her name in a lampoon, And grieved
         to find herself decayed so soon.         --Dryden.

Lampoon \Lam*poon"\, v. t. [imp. & p. p. {Lampooned}; p. pr. &
   vb. n. {Lampooning}.]
   To subject to abusive ridicule expressed in writing; to make
   the subject of a lampoon.

         Ribald poets had lampooned him.          --Macaulay.

   Syn: To libel; defame; satirize; lash.

Source : WordNet®

lampoon
     n : a composition that imitates somebody's style in a humorous
         way [syn: {parody}, {spoof}, {sendup}, {mockery}, {takeoff},
          {burlesque}, {travesty}, {charade}, {pasquinade}, {put-on}]
     v : ridicule with satire; "The writer satirized the politician's
         proposal" [syn: {satirize}, {satirise}]