Prison officer's pay (5)

I believe the answer is:

screw

This clue is a double definition.

'prison officer's' is the first definition.
(slang term)

'pay?' is the second definition.
(I've seen this before)

(Other definitions for screw that I've seen before include "Tighten by turning" , "Prison officer (sl.)" , "little twister!" , "Prison warder (sl)" , "Tapered fastener with a slotted head" .)

I've seen this clue in the Evening Standard and The Telegraph.

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