Tinker (6)
I believe the answer is:
dabble
'tinker' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for dabble that I've seen before include "Tinker" , "(Of a duck) move the bill around while feeding" , "Take cursory interest (in)" , "Take dilettante interest (in)" , "Engage in casually, not in depth" .)