Source : Webster's Revised Unabridged Dictionary (1913)

Femininity \Fem`i*nin"i*ty\, n.
   1. The quality or nature of the female sex; womanliness.

   2. The female form. [Obs.]

            O serpent under femininitee.          --Chaucer.

Source : WordNet®

femininity
     n : the trait of behaving in ways considered typical for women
         [syn: {muliebrity}] [ant: {masculinity}]