Language of East Africa (7)
I believe the answer is:
swahili
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">language of east africa</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 swahili that I've seen before include "An official language spoken in 15" , "African tongue" , "African people" , "East African language" , "E. African language" .)