Language of ancient Rome (5)
I believe the answer is:
latin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">language of ancient rome</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 latin that I've seen before include "Language of old Romans" , "foreign language" , "Language of old 8 down" , "The language of old Rome" , "and 15 Down: Student area of Paris" .)