Time of revolution (7)
'time of revolution' is the definition.
(as in the 1917 October Revolution in Russia)
'time of' is the wordplay.
I cannot really see how this works, but
'time' could be 't' (abbreviation) and 't' is found within the answer.
'of' could be 'o' and 'o' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for october that I've seen before include "Eighth month on the Roman calendar, originally" , "Revolutionary period" , "21st = Trafalgar Day" , "thirty-one days" , "Time for revolution" .)
'time of revolution?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for year that I've seen before include "Many students" , "Time period" , "See 33 Across" , "12 months" , "eg 2004" .)