Weighing little (5)
I believe the answer is:
light
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">weighing little</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for light that I've seen before include "Weightless; lamp" , "What smoker may be requesting" , "Easy to carry" , "Not having full load" , "Flimsy" .)