Apple throwaway (4)
I believe the answer is:
core
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">apple throwaway</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for core that I've seen before include "Planet's centre" , "Inmost part" , "The innermost part" , "Kernel" , "Essence" .)