Pierces with horns (5)
I believe the answer is:
gores
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pierces with horns</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 gores that I've seen before include "Impales in beastly fashion" , "Pierces with horn like bull" .)