Source : Webster's Revised Unabridged Dictionary (1913)

Obscenity \Ob*scen"i*ty\, n.; pl. {Obscenities}. [L. obscentias:
   cf.F. obsc['e]nit['e].]
   That quality in words or things which presents what is
   offensive to chasity or purity of mind; obscene or impure
   lanquage or acts; moral impurity; lewdness; obsceneness; as,
   the obscenity of a speech, or a picture.

         Mr.Cowley asserts plainly, that obscenity has no place
         in wit.                                  --Dryden.

         No pardon vile obscenity should find.    --Pope.

Source : WordNet®

obscenity
     n 1: the trait of behaving in an obscene manner [syn: {lewdness},
           {bawdiness}, {salaciousness}, {salacity}]
     2: an offensive or indecent word or phrase [syn: {vulgarism}, {dirty
        word}]
     3: an obscene act