Pierce through (9)
I believe the answer is:
penetrate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pierce through</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for penetrate that I've seen before include "probe" , "Run through" , "Go through" , "Force way through, into" , "Pass into or through" .)