Criminal organisation (5)

I think it could be either:

Which length description are you looking for?:

mafia

'criminal organisation' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for mafia that I've seen before include "Sicilian one" , "Criminal organisation with origin in Sicily" , "Sicilian criminal organisation" , "Gangsters" , "Criminal organisation also known as Cosa Nostra" .)

I've seen this clue in the Evening Standard, the Irish Times (Simplex), The Mirror, The Times, The Telegraph and The Guardian.

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