Irish national emblem (8)
I believe the answer is:
shamrock
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">irish national emblem</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for shamrock that I've seen before include "Native Irish trefoil" , "Irish national emblem" , "The national Irish trefoil" , "Symbol of Ireland" , "Sign of first part of 10 [IRISH [SEA]]" .)