India's official language (5)
I believe the answer is:
hindi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">india's official language</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 hindi that I've seen before include "Language derived from Sanskrit" , "An official language of India" , "language many use" , "tongue" , "One of India's official languages" .)