The Collaborative International Dictionary of English v.0.48:

Mingle \Min"gle\, v. t. [imp. & p. p. Mingled; p. pr. & vb. n.
   Mingling.] [From OE. mengen, AS. mengan; akin to D. & G.
   mengen, Icel. menga, also to E. among, and possibly to mix.
   Cf. Among, Mongrel.]
   [1913 Webster]
   1. To mix; intermix; to combine or join, as an individual or
      part, with other parts, but commonly so as to be
      distinguishable in the product; to confuse; to confound.
      [1913 Webster]

            There was . . . fire mingled with the hail. --Ex.
                                                  ix. 24.
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   2. To associate or unite in society or by ties of
      relationship; to cause or allow to intermarry; to
      intermarry.
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            The holy seed have mingled themselves with the
            people of those lands.                --Ezra ix. 2.
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   3. To deprive of purity by mixture; to contaminate.
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            A mingled, imperfect virtue.          --Rogers.
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   4. To put together; to join. [Obs.] --Shak.
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   5. To make or prepare by mixing the ingredients of.
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            [He] proceeded to mingle another draught.
                                                  --Hawthorne.
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The Collaborative International Dictionary of English v.0.48:

Mingle \Min"gle\, v. i.
   1. To become mixed or blended.
      [1913 Webster]

   2. To associate (with certain people); as, he's too
      highfalutin to mingle with working stiffs.
      [PJC]

   3. To move (among other people); -- of people; as, the
      president left his car to mingle with the crowd; a host at
      a a party should mingle with his guests.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Mingle \Min"gle\, n.
   A mixture. [Obs.] --Dryden.
   [1913 Webster]

WordNet (r) 3.0 (2006):

mingle
    v 1: to bring or combine together or with something else;
         "resourcefully he mingled music and dance" [syn: mix,
         mingle, commix, unify, amalgamate]
    2: get involved or mixed-up with; "He was about to mingle in an
       unpleasant affair"
    3: be all mixed up or jumbled together; "His words jumbled"
       [syn: jumble, mingle]