The Collaborative International Dictionary of English v.0.48:

Scamble \Scam"ble\, v. i. [imp. & p. p. Scambled; p. pr. & vb.
   n. Scambling.] [Cf. OD. schampelen to deviate, to slip,
   schampen to go away, escape, slip, and E. scamper, shamble.]
   1. To move awkwardly; to be shuffling, irregular, or
      unsteady; to sprawl; to shamble. "Some scambling shifts."
      --Dr. H. More. "A fine old hall, but a scambling house."
      --Evelyn.
      [1913 Webster]

   2. To move about pushing and jostling; to be rude and
      turbulent; to scramble. "The scambling and unquiet time
      did push it out of . . . question." --Shak.
      [1913 Webster]