Instrument held by poor gangsters (5)

I believe the answer is:

organ

'instrument' is the definition.
(I know that organ is a type of instrument)

'held by poor gangsters' is the wordplay.
'held by' says the answer is hidden in the clue.
'ORGAN' can be found hidden inside 'poor gangsters'.

(Other definitions for organ that I've seen before include "Part with special function" , "with a lofty tone?" , "Musical instrument - pancreas, perhaps" , "stops on one" , "Air-powered instrument" .)

I've seen this clue in The Daily Express.

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