Ears that can't hear (4)
I believe the answer is:
corn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ears that can't hear</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 corn that I've seen before include "Hard growth on foot" , "Type of cereal" , "Maize" , "Grain; hard skin" , "Grain - thick skin" .)