Revoke a law (6)
I believe the answer is:
repeal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">revoke a law</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 repeal that I've seen before include "Revoke, a law say" , "This is what O'Connell wanted" , "Annul an act of parliament" , "set aside" , "reverse" .)