Drag, pull with effort (4)
I believe the answer is:
haul
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">drag</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that drag can be written as haul)</span><br/ ><br/ >'<span class="explanation-format__original">pull with effort</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for haul that I've seen before include "Drag along behind" , "TRICK/TRICE" , "Pull along behind" , "Pull forcibly; catch" , "Draw slowly or heavily" .)