Share costs -- dough split outside revolutionary court (2,5)
I believe the answer is:
go dutch
'share costs' is the definition.
(I've seen this before)
'dough split outside revolutionary court' is the wordplay.
'split' indicates an anagram (letters split up and reassembled).
'outside' means one lot of letters goes inside another.
'revolutionary' says the letters should be written backwards (letters revolve around).
'court' becomes 'ct' (abbreviation used in road names).
'ct' written backwards gives 'tc'.
'dough' with letters rearranged gives 'goduh'.
'goduh' placed around 'tc' is 'GO DUTCH'.
(Other definitions for go dutch that I've seen before include "Share costs equally" , "come to a fifty-fifty financial arrangement" , "split the cost" , "to pay only half" , "settle equitably" .)