Sty sounds (5)
I believe the answer is:
oinks
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sty sounds</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oinks that I've seen before include "beastly noise" , "Noises from pens" , "Beastly sounds" , "High-pitched pig noises" , "Piggy noises" .)