Sail run about of the island (7)
I believe the answer is:
insular
'the island' is the definition.
(thesaurus)
'sail run about' is the wordplay.
'about' indicates an anagram.
'sail'+'run'='sailrun'
'sailrun' is an anagram of 'INSULAR'.
'of' is the link.
(Other definitions for insular that I've seen before include "Isolated -- urinals (anag)" , "cut off" , "Having a narrow outlook" , "Surrounded by water - narrow - prejudiced" , "Run sail (anag.)" .)