Source : Webster's Revised Unabridged Dictionary (1913)

Harangue \Ha*rangue"\, v. i. [imp. & p. p. {Harangued}; p. pr. &
   vb. n. {Haranguing}.] [Cf. F. haranguer, It. aringare.]
   To make an harangue; to declaim.

Harangue \Ha*rangue"\, v. t.
   To address by an harangue.

Harangue \Ha*rangue"\, n. [F. harangue: cf. Sp. arenda, It.
   aringa; lit., a speech before a multitude or on the hustings,
   It. aringo arena, hustings, pulpit; all fr. OHG. hring ring,
   anything round, ring of people, G. ring. See {Ring}.]
   A speech addressed to a large public assembly; a popular
   oration; a loud address a multitude; in a bad sense, a noisy
   or pompous speech; declamation; ranting.

         Gray-headed men and grave, with warriors mixed,
         Assemble, and harangues are heard.       --Milton.

   Syn: {Harangue}, {Speech}, {Oration}.

   Usage: Speech is generic; an oration is an elaborate and
          rhetorical speech; an harangue is a vehement appeal to
          the passions, or a noisy, disputatious address. A
          general makes an harangue to his troops on the eve of
          a battle; a demagogue harangues the populace on the
          subject of their wrongs.

Source : WordNet®

harangue
     n : a loud bombastic declamation expressed with strong emotion
         [syn: {rant}, {ranting}]

harangue
     v : deliver a harangue to; address forcefully