Grinds away
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grinds away</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for toils that I've seen before include "making snare" , "Labours; snares" , "net" , "nets" , "Works hard" .)