Symbol of Ireland (8)
I believe the answer is:
shamrock
'symbol of ireland' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for shamrock that I've seen before include "Symbol of Ireland" , "Clover-like plant" , "Sign of first part of 10 [IRISH [SEA]]" , "Irish national symbol" , "Clover native to Ireland" .)