Cow’s call (3)
I believe the answer is:
moo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cow's call</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for moo that I've seen before include "Bovine low" , "Low (of cattle)" , "Cow's call" , "Cartoon sound of a cow" , "Guernsey noise?" .)