Spain's peninsula (6)
I believe the answer is:
iberia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spain's peninsula</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for iberia that I've seen before include "SW European peninsula" , "Spain/Portugal peninsula" , "old part of Europe" , "Spanish/Portuguese peninsula" , "Spain and Portugal together" .)