North African desert (6)
I believe the answer is:
sahara
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">north african desert</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 sahara that I've seen before include "North African desert" , "World's largest sandy area" , "About 3,500,000 square miles of Africa" , "Great desert in N Africa" , "Great African desert" .)