The French island, safe for recreation (7)
I believe the answer is:
leisure
'recreation' is the definition.
(thesaurus)
'the french island safe' is the wordplay.
'the french' becomes 'le' (**).
'island' becomes 'i'.
'safe' becomes 'sure' (I've seen this before).
'le'+'i'+'sure'='LEISURE'
'for' acts as a link.
(Other definitions for leisure that I've seen before include "State of rest or repose" , "Time for relaxation and pleasure" , "Free time; relaxation" , "Use lire (anag)" , "casual wear" .)