Seraglios (6)
I believe the answer is:
harems
'seraglios' is the definition.
('harem' can be a synonym of 'seraglio')
This is the entire clue.
(Other definitions for harems that I've seen before include "quarters reserved for females" , "Seraglios, women's quarters in Muslim household" , "Masher found in quarters of Muslim women" , "Wives' associations" .)