Back flipper twirled cane (7)
I believe the answer is:
finance
'back' is the definition.
(to finance is to back or support with money)
'flipper twirled cane' is the wordplay.
'flipper' becomes 'fin' (synonyms).
'twirled' indicates anagramming the letters (I've seen 'twirling' mean this).
'cane' with letters rearranged gives 'ance'.
'fin'+'ance'='FINANCE'
(Other definitions for finance that I've seen before include "Back" , "funding" , "Money matters" , "Fund" , "Economics" .)