Scottish Highlander (4)
I believe the answer is:
gael
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scottish highlander</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 gael that I've seen before include "Celt of Ireland, the Scottish Highlands and the IOM" , "Celtic language speaker" , "Highland Scot" , "Irish speaker?" , "Scottish highlander" .)