The Collaborative International Dictionary of English v.0.48:

Rumble \Rum"ble\, v. t.
   To cause to pass through a rumble, or shaking machine. See
   Rumble, n., 4.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rumble \Rum"ble\, v. i. [OE. romblen, akin to D. rommelen, G.
   rumpeln, Dan. rumle; cf. Icel. rymja to roar.]
   1. To make a low, heavy, continued sound; as, the thunder
      rumbles at a distance.
      [1913 Webster]

            In the mean while the skies 'gan rumble sore.
                                                  --Surrey.
      [1913 Webster]

            The people cried and rombled up and down. --Chaucer.
      [1913 Webster]

   2. To murmur; to ripple.
      [1913 Webster]

            To rumble gently down with murmur soft. --Spenser.
      [1913 Webster]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rumble \Rum"ble\, n.
   1. A noisy report; rumor. [Obs.]
      [1913 Webster]

            Delighting ever in rumble that is new. --Chaucer.
      [1913 Webster]

   2. A low, heavy, continuous sound like that made by heavy
      wagons or the reverberation of thunder; a confused noise;
      as, the rumble of a railroad train.
      [1913 Webster]

            Clamor and rumble, and ringing and clatter.
                                                  --Tennyson.
      [1913 Webster]

            Merged in the rumble of awakening day. --H. James.
      [1913 Webster]

   3. A seat for servants, behind the body of a carriage.
      [1913 Webster]

            Kit, well wrapped, . . . was in the rumble behind.
                                                  --Dickens.
      [1913 Webster]

   4. A rotating cask or box in which small articles are
      smoothed or polished by friction against each other.
      [1913 Webster]
      [1913 Webster]

WordNet (r) 3.0 (2006):

rumble
    n 1: a loud low dull continuous noise; "they heard the rumbling
         of thunder" [syn: rumble, rumbling, grumble,
         grumbling]
    2: a servant's seat (or luggage compartment) in the rear of a
       carriage
    3: a fight between rival gangs of adolescents [syn: rumble,
       gang fight]
    v 1: make a low noise; "rumbling thunder" [syn: rumble,
         grumble]
    2: to utter or emit low dull rumbling sounds; "he grumbled a
       rude response"; "Stones grumbled down the cliff" [syn:
       grumble, growl, rumble]

Moby Thesaurus II by Grady Ward, 1.0:

203 Moby Thesaurus words for "rumble":
   Bedlam let loose, action, aerial combat, affray, armored combat,
   bark, battle, battle royal, bawl, be reflected, be sent back,
   bedlam, bellow, birdies, blare, blast, blat, blooping, blubber,
   blurping, bobbery, boom, booming, bounce back, brawl, bray,
   breathe, brouhaha, bruit, brush, bullfight, burst, buzz, cackle,
   canard, cannonade, chant, charivari, chirm, chirp, clamor, clangor,
   clap, clash, clash of arms, clatter, cockfight, combat,
   common talk, commotion, conflict, coo, crack, crash, crow, cry,
   din, discord, distortion, dogfight, donnybrook, drawl,
   drunken brawl, dustup, echo, echo back, embroilment,
   exchange of blows, exclaim, feedback, fight, fire fight, flap,
   flute, flutter, fluttering, flying rumor, fracas, fray,
   free-for-all, gasp, gossip, grapevine, ground combat, growl,
   growling, grumble, grumbling, grunt, hand-to-hand combat,
   hand-to-hand fight, hearsay, hell broke loose, hiss, hissing,
   house-to-house combat, howl, howling, hubbub, hue and cry,
   hullabaloo, hum, idea afloat, jangle, keen, latrine rumor, lilt,
   loud noise, motorboating, mumble, murmur, mutter, naval combat,
   news stirring, noise, noise and shouting, on-dit, outcry,
   pandemonium, pant, passage of arms, peal, pipe, pitched battle,
   quarrel, racket, rattle, reboation, rebound, reecho, report,
   resound, resounding, return, reverberate, reverberation, rhubarb,
   roar, roll, roorback, row, ruckus, ruction, rumbling, rumor,
   rumpus, running fight, scramble, scratching, scream, screech,
   scrimmage, scuffle, scuttlebutt, send back, shindy, shivaree,
   shoving match, shredding, shriek, sibilate, sigh, sing, skirmish,
   snap, snarl, snort, sob, sound, squall, squawk, squeal, squeals,
   stand-up fight, static, street fight, struggle, talk, tauromachy,
   thunder, thunderclap, thundering, tintamarre, town talk, trumpet,
   tug-of-war, tumult, tussle, twang, unconfirmed report, uproar,
   wail, warble, whine, whisper, whistles, woomping, wow, wowwows,
   yap, yawp, yell, yelp