Cross out (6)
I believe the answer is:
delete
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cross out</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for delete that I've seen before include "'Erase, remove (6)'" , "Eliminate" , "Key" , "Remove, cross out" , "Remove or erase (text)" .)