Lees (5)
I believe the answer is:
dregs
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lees</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 dregs that I've seen before include "Sediment at bottom of drink" , "Bottom of the barrel" , "Sediment, lees" , "Fluid remnants" , "Most worthless parts" .)