Welsh port (7)
I believe the answer is:
swansea
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">welsh 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 swansea that I've seen before include "South Wales port" , "Home of the DVLA" , "Ecstasy, a win! (anag)" , "coastal location" , "Second city of Wales" .)