The Collaborative International Dictionary of English v.0.48:

Private \Pri"vate\ (pr[imac]"v[asl]t), n.
   1. A secret message; a personal unofficial communication.
      [Obs.] --Shak.
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   2. Personal interest; particular business.[Obs.]
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            Nor must I be unmindful of my private. --B. Jonson.
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   3. Privacy; retirement. [Archaic] "Go off; I discard you; let
      me enjoy my private." --Shak.
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   4. One not invested with a public office. [Archaic]
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            What have kings, that privates have not too? --Shak.
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   5. (Mil.) A common soldier; a soldier below the grade of a
      noncommissioned officer. --Macaulay.
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   6. pl. The private parts; the genitals.
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   In private, secretly; not openly or publicly.
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WordNet (r) 3.0 (2006):

in private
    adv 1: kept private or confined to those intimately concerned;
           "it was discussed privately between the two men";
           "privately, she thought differently"; "some member of his
           own party hoped privately for his defeat"; "he was
           questioned in private" [syn: privately, in private,
           in camera] [ant: in public, publically, publicly]