I was in charge of revolutionary food shop (4)
I believe the answer is:
deli
'food shop' is the definition.
(synonyms)
'i was in charge of revolutionary' is the wordplay.
'was in charge of' becomes 'led' (to lead something is to be in charge of it).
'revolutionary' shows that the letters should be reversed in order.
'i'+'led'='iled'
'iled' in reverse letter order is 'DELI'.
(Other definitions for deli that I've seen before include "part of supermarket" , "shop briefly" , "Shop selling foreign foods" , "Fine foods shop" , "Cold-meat counter" .)