The Nigerian capital (5)
I believe the answer is:
abuja
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the nigerian capital</span>' is the definition.<br/ ><span class="explanation-format__explanation">(capital of Nigeria)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abuja that I've seen before include "African city" , "Nigerian capital" , "Federal capital of Nigeria" .)