Gloriole (4)
I believe the answer is:
halo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gloriole</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for halo that I've seen before include "Luminous sign of saintliness" , "Glowing ring (around saint's head)" , "glory" , "Angelic aura" , "Light around sun, saint" .)