I bank on trade (6)
I believe the answer is:
metier
'trade' is the definition.
(thesaurus)
'i bank on' is the wordplay.
'i' becomes 'me'.
'bank' becomes 'tier' (I've seen this before).
'on' is a charade indicator (letters next to each other).
'me'+'tier'='METIER'
(Other definitions for metier that I've seen before include "job" , "Trade - profession" , "What one does best, from French" , "Field of activity, what one does best" , "One's strong point" .)