Managed to take in a crazy month (7)
I believe the answer is:
ramadan
'month' is the definition.
(Ramadan is an example)
'managed to take in a crazy' is the wordplay.
'managed' becomes 'ran' (both can mean organised or was in charge of).
'to take in' indicates putting letters inside.
'crazy' becomes 'mad' (synonyms).
'a'+'mad'='amad'
'ran' placed around 'amad' is 'RAMADAN'.
(Other definitions for ramadan that I've seen before include "Ninth month of Muslim year, a time of fasting" , "Muslims observe this" , "Moslem fast" , "Muslim period of fasting" , "The penitential ninth month of the Muslim year" .)