Peninsula comprising Spain and Portugal (6)
I believe the answer is:
iberia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">peninsula comprising spain and portugal</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for iberia that I've seen before include "Spain and Portugal (6)" , "European territory" , "European peninsula comprising Spain and Portugal" , "The peninsula incorporating Spain and Portugal" , "It comprises Spain and Portugal" .)