Husks of cereal grain (4)
I believe the answer is:
bran
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">husks of cereal grain</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 bran that I've seen before include "Coarse meal for horses" , "Husks of corn" , "Husks after milling" , "Milled grain husk" , "Horse-food in barn" .)