The Collaborative International Dictionary of English v.0.48:

Secrecy \Se"cre*cy\, n.; pl. Secrecies. [From Secret.]
   1. The state or quality of being hidden; as, his movements
      were detected in spite of their secrecy.
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            The Lady Anne,
            Whom the king hath in secrecy long married. --Shak.
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   2. That which is concealed; a secret. [R.] --Shak.
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   3. Seclusion; privacy; retirement. "The pensive secrecy of
      desert cell." --Milton.
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   4. The quality of being secretive; fidelity to a secret;
      forbearance of disclosure or discovery.
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            It is not with public as with private prayer; in
            this, rather secrecy is commanded than outward show.
                                                  --Hooker.
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WordNet (r) 3.0 (2006):

secrecy
    n 1: the trait of keeping things secret [syn: secrecy,
         secretiveness, silence]
    2: the condition of being concealed or hidden [syn: privacy,
       privateness, secrecy, concealment]