Polish part of Mediterranean (4)

I believe the answer is:

edit

'polish' is the definition.
(thesaurus)

'part of mediterranean' is the wordplay.
'part of' indicates the answer is hidden within the clue.
'EDIT' is hidden in the letters of 'mediterranean'.

(Other definitions for edit that I've seen before include "Prepare (material) for publishing" , "Check text for publication" , "What our boss does" , "Rework (text)" , "Prep for press" .)

I've seen this clue in The Telegraph.

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