Definition of "harangues"

It can hardly be policy, it must be a necessity of his nature, which prompts his incessant harangues.

1875, W. E. (William Ewart) Gladstone, Speeches of Pope Pius IX.‎, page 4

Or perhaps Hull merely rewrote Kearney's incoherent harangues, polishing their language, heightening their ferocity, after they were delivered?

1997, Kevin Starr, Endangered Dreams: The Great Depression in California‎, page 11