Shone, glistened (7)
I believe the answer is:
gleamed
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">shone</span>' is the first definition.<br/ ><span class="explanation-format__explanation">('gleam' can be a synonym of 'shine')</span><br/ ><br/ >'<span class="explanation-format__original">glistened</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for gleamed that I've seen before include "Shone" , "As eyes did" .)