Survivor; widow (6)
I believe the answer is:
relict
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">survivor</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">widow</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for relict that I've seen before include "Primitive survival; widow (arch.)" , "Remnant" , "Old word for widow" , "Widow - surviving group" , "Widow, surviving partner" .)