Crossword Genius

Secure reversal of roles (5)

Ross

I believe the answer is:

strap

'secure' is the definition.
(I know that strap is a type of secure)

'reversal of roles' is the wordplay.
'reversal of' says the letters should be written backwards.
'roles' becomes 'parts' ('part' can be a synonym of 'role').
'parts' written backwards gives 'STRAP'.

(Other definitions for strap that I've seen before include "Restraining fastener" , "Shoulder band" , "Beat; securing band" , "Fasten; punishment" , "Leather fastener" .)

I've seen this clue in the Sydney Morning Herald.
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