Hebridean island (5)
(Other definitions for iona that I've seen before include "Hebridean island, where in 563 St Columba founded a monastery" , "holy site" , "Isle of the Inner Hebrides, made famous by St Columba" , "St Columba's island of the Inner Hebrides" , "small island" .)
'hebridean island' is the definition.
(island of the Hebrides)
This is all the clue.
(Other definitions for skye that I've seen before include "Large Scottish island" , "Home of the Cuillin mountains" , "Scots isle" , "Largest Inner Hebridean island" , "Where Bonnie Prince Charlie fled after his defeat at Culloden" .)
'hebridean island' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for islay that I've seen before include "Isle known for distilleries" , "Island noted for whisky" , "part of the Hebrides" , "somewhere off Scottish mainland" , "Island of the Inner Hebrides" .)