Unblocked (5)
I believe the answer is:
clear
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unblocked</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 clear that I've seen before include "Exculpate" , "Empty - vault" , "Discharge (debt), unclouded" , "Lucid, obvious" , "Not obstructed" .)