Shine brightly (5)
I believe the answer is:
gleam
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shine brightly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for gleam that I've seen before include "Glimmer, lustre" , "Brightness" , "Brief bright light" , "Small stream of light" , "Coruscate" .)