Irish seaport (5)
I believe the answer is:
sligo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">irish seaport</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sligo that I've seen before include "Yeat's county" , "area by the sea" , "Southern Irish county" , "part of Ireland" , "Irish seaport and county" .)