Reverse past bend (8)
I believe the answer is:
overturn
'reverse' is the definition.
('overturn' can be a synonym of 'reverse')
'past bend' is the wordplay.
'past' becomes 'over' (I've seen this before).
'bend' becomes 'turn' ('turn' can be a synonym of 'bend'**).
'over'+'turn'='OVERTURN'
(Other definitions for overturn that I've seen before include "Revoke" , "Reverse (decision)" , "Reverse (legal ruling)" , "tip" , "Reverses, a decision say" .)