The Collaborative International Dictionary of English v.0.48:

Jumble \Jum"ble\, v. i.
   To meet or unite in a confused way; to mix confusedly.
   --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jumble \Jum"ble\, n.
   1. A confused mixture; a mass or collection without order;
      as, a jumble of words.
      [1913 Webster]

   2. A small, thin, sugared cake, usually ring-shaped. [Also
      spelled jumbal.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jumble \Jum"ble\, v. t. [imp. & p. p. Jumbled; p. pr. & vb. n.
   Jumbling.] [Prob. fr. jump, i. e., to make to jump, or
   shake.]
   To mix in a confused mass; to put or throw together without
   order; -- often followed by together or up.
   [1913 Webster]

         Why dost thou blend and jumble such inconsistencies
         together?                                --Burton.
   [1913 Webster]

         Every clime and age
         Jumbled together.                        --Tennyson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

jumble
    n 1: a confused multitude of things [syn: clutter, jumble,
         muddle, fuddle, mare's nest, welter, smother]
    2: small flat ring-shaped cake or cookie [syn: jumble,
       jumbal]
    3: a theory or argument made up of miscellaneous or incongruous
       ideas [syn: patchwork, hodgepodge, jumble]
    v 1: be all mixed up or jumbled together; "His words jumbled"
         [syn: jumble, mingle]
    2: assemble without order or sense; "She jumbles the words when
       she is supposed to write a sentence" [syn: jumble,
       confuse, mix up]
    3: bring into random order [syn: scramble, jumble, throw
       together]