Check Mediterranean houses (4)
I believe the answer is:
edit
'check' is the definition.
(edit can mean to check or emend)
'mediterranean houses' is the wordplay.
'houses' indicates a hidden word (part of the clue houses the answer).
'EDIT' is hidden in the letters of 'mediterranean'.
(Other definitions for edit that I've seen before include "Ready for publication" , "Amend a publication" , "Prepare text for press" , "Rewrite" , "Blue-pencil" .)