Small offshoot (4)
I believe the answer is:
twig
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">small offshoot</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 twig that I've seen before include "A small branch - cop on?" , "small piece in plane, say" , "Small part of tree - suddenly understand" , "Eventually grasp" , "Finally understand" .)