Cereal husks (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cereal husks</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 "Food for horses in barn" , "Healthy breakfast" , "Husks of cereal seeds sifted from flour" , "Element in high fibre diet" , "Refuse from grain" .)
(Other definitions for chaff that I've seen before include "Refuse - banter" , "Laugh at" , "Husks - jokes" , "shells" , "twit" .)