Dutch port (9)
I believe the answer is:
rotterdam
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dutch port</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rotterdam that I've seen before include "European port" , "city abroad" , "Dutch city and port" , "Major North Sea port - tarred tom (anag)" , "European city" .)