Old Scandinavian tongue (5)
I believe the answer is:
norse
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">old scandinavian tongue</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for norse that I've seen before include "Ancient Scandinavian language" , "Of old Scandinavia" , "Old European" , "Relating to ancient Scandinavian" , "Old Scandinavian tongue" .)