Capital city of Guyana (10)
I believe the answer is:
georgetown
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">capital city of guyana</span>' is the definition.<br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for georgetown that I've seen before include "South American capital" , "South American city" , "Port" .)