Source : Webster's Revised Unabridged Dictionary (1913)

Rumpus \Rum"pus\, n.
   A disturbance; noise and confusion; a quarrel. [Colloq.]

Source : WordNet®

rumpus
     n : the act of making a noisy disturbance [syn: {commotion}, {din},
          {ruction}, {ruckus}, {tumult}]

rumpus
     v : cause a disturbance