Fleur-de-lys (4)
I believe the answer is:
iris
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fleur-de-lys</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 iris that I've seen before include "Flag,flower and part of the eye" , "Part of the eye, usually brown or blue" , "Flag - surrounding pupil" , "Bright flower or eye part" , "Flowers in the eye?" .)