Source : Webster's Revised Unabridged Dictionary (1913)

Seraglio \Se*ragl"io\, n. [It. serraglio, originally, an
   inclosure of palisades, afterwards also, a palace, seraglio
   (by confusion with Per. ser[=a]["i]a a palace, an entirely
   different word), fr. serrare to shut, fr. LL. serra a bar for
   fastening doors, L. sera. See {Serry}, {Series}.]
   1. An inclosure; a place of separation. [Obs.]

            I went to the Ghetto, where the Jews dwell as in a
            suburb, by themselves. I passed by the piazza Judea,
            where their seraglio begins.          --Evelyn.

   2. The palace of the Grand Seignior, or Turkish sultan, at
      Constantinople, inhabited by the sultan himself, and all
      the officers and dependents of his court. In it are also
      kept the females of the harem.

   3. A harem; a place for keeping wives or concubines;
      sometimes, loosely, a place of licentious pleasure; a
      house of debauchery.

Source : WordNet®

seraglio
     n : living quarters reserved for wives and concubines and female
         relatives in a Muslim household [syn: {harem}, {hareem},
         {serail}]