Get; stick (4)
I believe the answer is:
twig
'stick' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for twig that I've seen before include "Informally grasp meaning" , "growth of smaller branches" , "very little from box, perhaps" , "a small piece of gum?" , "Suddenly get" .)