City on the Liffey (6)
I believe the answer is:
dublin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">city on the liffey</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 dublin that I've seen before include "Irish capital city" , "Ulysses city (Joyce)" , "City on the Liffey" , "European capital" , "Capital of Ireland" .)