Muslim holy month (7)
I believe the answer is:
ramadan
'muslim holy month' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ramadan that I've seen before include "Ninth month of Muslim year, time to fast" , "Islamic holy month" , "Ninth month of Muslim year, a time of fasting" , "The fasting month for Muslims, ninth of year" , "Muslim holy month" .)