Source : Webster's Revised Unabridged Dictionary (1913)

Tirade \Ti*rade"\, n. [F., fr. It. tirada, properly, a pulling;
   hence, a lengthening out, a long speech, a tirade, fr. tirare
   to draw; of Teutonic origin, and akin to E. tear to redn. See
   {Tear} to rend, and cf. {Tire} to tear.]
   A declamatory strain or flight of censure or abuse; a
   rambling invective; an oration or harangue abounding in
   censorious and bitter language.

         Here he delivers a violent tirade against persons who
         profess to know anything about angels.   --Quarterly
                                                  Review.

Source : WordNet®

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