The Collaborative International Dictionary of English v.0.48:

Nudity \Nu"di*ty\, n.; pl. Nudities. [Cf. F. nudit['e].]
   1. The quality or state of being nude; nakedness.
      [1913 Webster]

   2. That which is nude or naked; naked part; undraped or
      unclothed portion; esp. (Fine Arts), the human figure
      represented unclothed; any representation of nakedness; --
      chiefly used in the plural and in a bad sense.
      [1913 Webster]

            There are no such licenses permitted in poetry any
            more than in painting, to design and color obscene
            nudities.                             --Dryden.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nudity
    n 1: the state of being without clothing or covering of any kind
         [syn: nakedness, nudity, nudeness]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "nudity":
   baldness, bareness, beauty unadorned, birthday suit, decollete,
   ecdysiast, gymnosophist, gymnosophy, nakedness, naturism, naturist,
   not a stitch, nudism, nudist, state of nature, stripper,
   stripteaser, the altogether, the nude, the raw, toplessness,
   unadulteration, uncomplexity, uncomplicatedness, uncomplication,
   undress, unembellishment, unornamentation, unsophistication