Great revolutionary circus feature? (3,3)
I believe the answer is:
big top
'circus feature?' is the definition.
(I've seen this in another clue)
'great revolutionary' is the wordplay.
'great' becomes 'big' (synonyms).
'revolutionary' becomes 'top' (I can't justify this - if you can you should believe this answer much more).
'big'+'top'='BIG TOP'
Can you help me to learn more?
(Other definitions for big top that I've seen before include "'Main circus tent (3,3)'" , "needed by Mae West, for one?" , "performance in The Ring" , "entertainment centre" , "Circus venue" .)