Skivvy (6)
I believe the answer is:
drudge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">skivvy</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 drudge that I've seen before include "skivvy" , "Menial labourer" , "Menial servant" , "One does long and boring work" , "One who does monotonous work" .)