The Collaborative International Dictionary of English v.0.48:

Brawl \Brawl\, v. i. [imp. & p. p. Brawled; p. pr. & vb. n.
   Brawling.] [OE. braulen to quarrel, boast, brallen to cry,
   make a noise; cf. LG. brallen to brag, MHG. pr?ulen, G.
   prahlen, F. brailler to cry, shout, Pr. brailar, braillar, W.
   bragal to vociferate, brag, Armor. bragal to romp, to strut,
   W. broliaw to brag, brawl boast. ?95.]
   1. To quarrel noisily and outrageously.
      [1913 Webster]

            Let a man that is a man consider that he is a fool
            that brawleth openly with his wife.   --Golden Boke.
      [1913 Webster]

   2. To complain loudly; to scold.
      [1913 Webster]

   3. To make a loud confused noise, as the water of a rapid
      stream running over stones.
      [1913 Webster]

            Where the brook brawls along the painful road.
                                                  --Wordsworth.
      [1913 Webster]

   Syn: To wrangle; squabble; contend.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Brawl \Brawl\, n.
   A noisy quarrel; loud, angry contention; a wrangle; a tumult;
   as, a drunken brawl.
   [1913 Webster]

         His sports were hindered by the brawls.  --Shak.
   [1913 Webster]

   Syn: Noise; quarrel; uproar; row; tumult.
        [1913 Webster]

WordNet (r) 3.0 (2006):

brawl
    n 1: an uproarious party [syn: bash, do, brawl]
    2: a noisy fight in a crowd [syn: brawl, free-for-all]
    v 1: to quarrel noisily, angrily or disruptively; "The bar
         keeper threw them out, but they continued to wrangle on
         down the street" [syn: brawl, wrangle]

Moby Thesaurus II by Grady Ward, 1.0:

236 Moby Thesaurus words for "brawl":
   Bedlam let loose, ado, affray, agitation, altercate, altercation,
   argument, assemblee, assembly, assignation, at home, ball, battle,
   battle royal, be noisy, bedlam, bicker, bickering, blast,
   blood feud, bluster, bobbery, bother, box, brannigan, brawl, broil,
   brouhaha, cacophony, caterwaul, caucus, chaos, charivari, chirm,
   clamor, clangor, clap, clash, clatter, close, collide, colloquium,
   combat, come to blows, commission, committee, commotion, conclave,
   concourse, congregation, congress, contend, contention, contest,
   controversy, conventicle, convention, convocation, council,
   cut and thrust, dance, date, diet, differ, din, discord, disorder,
   dispute, disturbance, dogfight, donnybrook, donnybrook fair,
   drunken brawl, duel, dust, dustup, ebullition, eisteddfod,
   embroilment, eruption, exchange blows, exchange of blows,
   fanaticism, fence, ferment, festivity, fete, feud, fight,
   fight a duel, fisticuffs, flap, flite, fliting, fomentation,
   foofaraw, forgathering, forum, fracas, fray, free-for-all, frenzy,
   fume, furor, furore, fury, fuss, gathering, get-together,
   give and take, give satisfaction, grapple, grapple with, hassle,
   have words, hell broke loose, helter-skelter, housewarming, howl,
   hubbub, hue and cry, hullabaloo, imbroglio, incident, jangle,
   join issue, jostle, joust, knock-down-and-drag-out, levee,
   logomachy, loud noise, maffick, make a noise, make a racket,
   make an uproar, maul, meet, meeting, melee, mix it up, muss, noise,
   noise and shouting, open quarrel, outcry, pandemonium, panel,
   party, passion, pell-mell, plenum, polemic, pother, prom, quarrel,
   quorum, racket, rage, raise Cain, raise a clamor, raise hell,
   raise the devil, raise the roof, rally, rampage, rassle, rattle,
   reception, rendezvous, rhubarb, riot, roar, rough-and-tumble,
   roughhouse, row, ruckus, ruction, rumble, rumpus, run a tilt,
   scramble, scrap, scrimmage, scuffle, seance, session, set to,
   set-to, sharp words, shindig, shindy, shivaree, sit-in, sitting,
   skirmish, slanging match, snarl, soiree, spar, spat, squabble,
   stir, storminess, strife, symposium, synod, tempestuousness,
   thrust and parry, thunder, thunderclap, tiff, tilt, tintamarre,
   to-do, tourney, trouble, tumult, tumultuousness, turbulence,
   turmoil, turnout, tussle, upheaval, uproar, upset, vendetta,
   wage war, war, whoop it up, wildness, words, wrangle, wrestle,
   zeal, zealousness