Run on city bank (4)
I believe the answer is:
rely
'bank' is the definition.
(thesaurus)
'run on city' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'on' is a charade indicator (letters next to each other).
'city' becomes 'ely' (I've seen this before**).
'r'+'ely'='RELY'
(Other definitions for rely that I've seen before include "Count" , "Have confidence or faith in" , "Depend, bank" , "Be sure" , "Depend or lean on" .)