Scribble or draw aimlessly (6)
I believe the answer is:
doodle
I believe this is a double definition.
'scribble' is the first definition.
(I've seen this before)
'draw aimlessly' is the second definition.
(I've seen this in another clue)
(Other definitions for doodle that I've seen before include "Draw aimlessly" , "Scribbled drawing" , "Aimless scribble" , "Aimless drawing" , "Absent-minded scribble" .)