Chewing gum ingredient (6)
I believe the answer is:
chicle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chewing gum ingredient</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 chicle that I've seen before include "Some of something to chew" , "sapodilla gum" , "Milky juice of tropical tree used in chewing gum" , "Cliche about tropical juice used to make chewing gum" .)