rant

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To speak or write in an angry or emotionally charged manner; rave.
• intransitive verb To express at length a complaint or negative opinion.
• intransitive verb To utter or express by ranting.
• noun Angry, emotionally charged, or tediously negative speech or writing.
• noun An example of such speech or writing.
• noun Chiefly British Wild or uproarious merriment.

from The Century Dictionary.

• noun Boisterous, empty declamation; fierce or high-sounding language without much meaning or dignity of thought; bombast.
• noun A ranting speech; a bombastic or boisterous utterance.
• noun The act of frolicking; a frolic; a boisterous merrymaking, generally accompanied with dancing.
• noun A kind of dance, or the music to which it was danced.
• To speak or declaim violently and with little sense; rave: used of both the matter and the manner of utterance, or of either alone: as, a ranting preacher or actor.
• To be jovial or jolly in a noisy way; make noisy mirth.

from the GNU version of the Collaborative International Dictionary of English.

• noun High-sounding language, without importance or dignity of thought; boisterous, empty declamation; bombast.
• intransitive verb To rave in violent, high-sounding, or extravagant language, without dignity of thought; to be noisy, boisterous, and bombastic in talk or declamation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A criticism done by ranting.
• noun A wild, incoherent, emotional articulation.
• verb To speak or shout at length in an uncontrollable anger.
• verb To criticize by ranting.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun pompous or pretentious talk or writing
• verb talk in a noisy, excited, or declamatory manner
• noun a loud bombastic declamation expressed with strong emotion