Magnificent month (6)
I believe the answer is:
august
This clue is a double definition.
'magnificent' is the first definition.
(thesaurus)
'month' is the second definition.
(August is an example)
(Other definitions for august that I've seen before include "clown in circus" , "comic entertainer for children" , "Eighth month" , "A grand month?" , "Period in 1 down" .)