Scottish island (4)
(Other definitions for iona that I've seen before include "Holy island" , "place in the Hebrides" , "Hebridean island associated with St Columba" , "Isolated part of UK" , "Site of St Columba's monastery" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scottish island</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for skye that I've seen before include "Destination of a princely boat trip" , "Island in a boat song about Flora MacDonald and Bonnie Prince Charlie" , "Scottish location" , "Largest isle of the Inner Hebrides" , "Isle; terrier type" .)