Border of the Mediterranean (3)

I believe the answer is:

hem

'border' is the definition.
(thesaurus)

'of the mediterranean' is the wordplay.
'of' indicates a hidden word.
'HEM' is hidden within 'the mediterranean'.

(Other definitions for hem that I've seen before include "Border; fringe" , "try to attract attention" , "Double-backed cloth border" , "Sewn border" , "Sewn edge to fabric" .)

I've seen this clue in the Evening Standard.

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