Many a Yemeni (4)
I believe the answer is:
arab
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">many a yemeni</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for arab that I've seen before include "Someone from the Middle East or North Africa, perhaps" , "One from the Middle East or North Africa" , "Small riding horse" , "Native of North Africa" , "Horse of a breed originating in the Middle East" .)