Shooting star (6)
I believe the answer is:
meteor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shooting star</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that shooting star can be written as meteor)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for meteor that I've seen before include "streaker?" , "Glowing body entering atmosphere" , "Small extraterrestrial body" , "Remote type of heavenly body" , "Solar System body" .)