Rubber (6)
I believe the answer is:
eraser
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rubber</span>' is the definition.<br/ ><span class="explanation-format__explanation">(rubber can mean an eraser)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eraser that I've seen before include "Item used for rubbing out" , "A student's rubber, or the one who uses it" , "India rubber" , "Rubs out" , "device for deleting things" .)