Wild pig (4)
I believe the answer is:
boar
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wild pig</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 boar that I've seen before include "Wild pig sounds tedious" , "Male swine" , "Uncastrated male hog" , "Wild animal, sounds like drill" , "A wild male pig" .)