Sound of a crow (3)
I believe the answer is:
caw
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sound of a crow</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 caw that I've seen before include "Rook's cry" , "Cry of a rook" , "Rook's call" , "Sound made by a crow, say" , "Call like rook" .)