Sign of sainthood
I believe the answer is:
halo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sign of sainthood</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 halo that I've seen before include "Circle of light round the sun or moon" , "Circle over saint's head in painting" , "Ring of light (signifying holiness)" , "Ring (around sun or moon)" , "Disc of light" .)