What does "harangue" mean?

Harangue: 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. 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.