Flag; goddess (4)
I believe the answer is:
iris
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">flag</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(type of iris flower)</span><br/ ><br/ >'<span class="explanation-format__original">goddess</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(goddess of the rainbow)</span><br/ ><br/ ></span>
(Other definitions for iris that I've seen before include "Rainbow-goddess" , "bit of a looker" , "Eye diaphragm" , "Fleur-de-lis" , "may open up in camera" .)