Walk out (4)
I believe the answer is:
quit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">walk out</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 quit that I've seen before include "Depart, resign from" , "Vacate" , "Leave; give up" , "Desist" , "Leave office" .)