The Collaborative International Dictionary of English v.0.48:

Deny \De*ny"\, v. t. [imp. & p. p. Denied; p. pr. & vb. n.
   Denying.] [OE. denien, denaien, OF. denier, deneer, F.
   d['e]nier, fr. L. denegare; de- + negare to say no, deny. See
   Negation.]
   1. To declare not to be true; to gainsay; to contradict; --
      opposed to affirm, allow, or admit.
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   Note: We deny what another says, or we deny the truth of an
         assertion, the force of it, or the assertion itself.
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   2. To refuse (to do something or to accept something); to
      reject; to decline; to renounce. [Obs.] "If you deny to
      dance." --Shak.
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   3. To refuse to grant; to withhold; to refuse to gratify or
      yield to; as, to deny a request.
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            Who finds not Providence all good and wise,
            Alike in what it gives, and what denies? --Pope.
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            To some men, it is more agreeable to deny a vicious
            inclination, than to gratify it.      --J. Edwards.
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   4. To disclaim connection with, responsibility for, and the
      like; to refuse to acknowledge; to disown; to abjure; to
      disavow.
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            The falsehood of denying his opinion. --Bancroft.
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            Thou thrice denied, yet thrice beloved. --Keble.
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   To deny one's self, to decline the gratification of
      appetites or desires; to practice self-denial.
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            Let him deny himself, and take up his cross. --Matt.
                                                  xvi. 24.
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The Collaborative International Dictionary of English v.0.48:

Deny \De*ny"\, v. i.
   To answer in ??? negative; to declare an assertion not to be
   true.
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         Then Sarah denied, saying, I laughed not; for she was
         afraid.                                  --Gen. xviii.
                                                  15.
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WordNet (r) 3.0 (2006):

deny
    v 1: declare untrue; contradict; "He denied the allegations";
         "She denied that she had taken money" [ant: acknowledge,
         admit]
    2: refuse to accept or believe; "He denied his fatal illness"
    3: refuse to grant, as of a petition or request; "The dean
       denied the students' request for more physics courses"; "the
       prisoners were denied the right to exercise for more than 2
       hours a day"
    4: refuse to let have; "She denies me every pleasure"; "he
       denies her her weekly allowance" [syn: deny, refuse]
       [ant: allow, grant]
    5: deny oneself (something); restrain, especially from indulging
       in some pleasure; "She denied herself wine and spirits" [syn:
       deny, abnegate]
    6: deny formally (an allegation of fact by the opposing party)
       in a legal suit [syn: traverse, deny]
    7: refuse to recognize or acknowledge; "Peter denied Jesus"