Medieval Scandinavian language (3,5)
I believe the answer is:
old norse
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">medieval scandinavian language</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 old norse that I've seen before include "Medieval Scandinavian language" , "Ancient Scandinavian language" , "Extinct Germanic language" .)