Draw absentmindedly (6)
I believe the answer is:
doodle
'draw absentmindedly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for doodle that I've seen before include "Scribble meaninglessly, fiddle with pen" , "Scribble (with a 7?)" , "Casually draw" , "Absent-minded drawing" , "Poem by Byron; king of Sicily" .)