The Collaborative International Dictionary of English v.0.48:

Tussle \Tus"sle\, n.
   A struggle; a scuffle. [Colloq.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tussle \Tus"sle\, v. i. & t. [See Tousle.]
   To struggle, as in sport; to scuffle; to struggle with.
   [Colloq.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

tussle
    n 1: disorderly fighting [syn: hassle, scuffle, tussle,
         dogfight, rough-and-tumble]
    v 1: fight or struggle in a confused way at close quarters; "the
         drunken men started to scuffle" [syn: scuffle, tussle]
    2: make messy or untidy; "the child mussed up my hair" [syn:
       muss, tussle]

Moby Thesaurus II by Grady Ward, 1.0:

103 Moby Thesaurus words for "tussle":
   action, aerial combat, affray, agonize, altercation, argument,
   armored combat, battle, battle royal, bicker, blood feud, box,
   brawl, broil, brush, buffet, bullfight, clash, clash of arms,
   close, cockfight, collide, combat, come to blows, conflict,
   contend, contention, contest, controversy, cut and thrust, dispute,
   dogfight, donnybrook, donnybrook fair, duel, embroilment,
   exchange blows, exchange of blows, fence, feud, fight,
   fight a duel, fire fight, fliting, fracas, fray, fuss,
   give and take, give satisfaction, grapple, grapple with,
   ground combat, grunt and sweat, hand-to-hand combat,
   hand-to-hand fight, hassle, house-to-house combat, huff and puff,
   imbroglio, jostle, joust, logomachy, mix it up, naval combat,
   open quarrel, passage of arms, pitched battle, polemic, quarrel,
   rassle, riot, rumble, run a tilt, running fight, scramble, scrap,
   scrimmage, scuffle, sharp words, shoving match, skirmish,
   slanging match, snarl, spar, spat, squabble, stand-up fight,
   street fight, strife, strive, struggle, tauromachy,
   thrust and parry, tiff, tilt, tourney, tug-of-war, vendetta,
   wage war, war, words, wrangle, wrestle