Source : Webster's Revised Unabridged Dictionary (1913)

Philippic \Phi*lip"pic\, n. [L. Philippicus belonging to Philip,
   Philippic, Gr. ?, fr. ? Philip, ? fond of horses: cf. F.
   philippique.]
   1. Any one of the series of famous orations of Demosthenes,
      the Grecian orator, denouncing Philip, king of Macedon.

   2. Hence: Any discourse or declamation abounding in
      acrimonious invective.

Source : WordNet®

philippic
     n : a speech of violent denunciation [syn: {tirade}, {broadside}]