Fall sound (4)
I believe the answer is:
thud
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fall sound</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 thud that I've seen before include "Dull heavy impact" , "Noise of dull impact" , "Clonk" , "Dull, heavy sound" , "Sound made by impact of heavy objects" .)