Isles off the Irish coast (4)
I believe the answer is:
aran
'isles off the irish coast' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aran that I've seen before include "Galway Bay isle" , "-- Islands; -- sweater" , "Irish islands" , "traditional type of knitwear" , "islands near 9 [GALWAY]" .)