Ruth's mother-in-law (5)
I believe the answer is:
naomi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ruth's mother-in-law</span>' is the definition.<br/ ><span class="explanation-format__explanation">(biblical figure)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for naomi that I've seen before include "Ruth's mother-in-law (OT)" , "Biblical woman" , "-- Campbell, British model" , "Biblical mother-in-law of Ruth" , "mother- in-law" .)