Old ode could have come from aimless drawing (6)
I believe the answer is:
doodle
'aimless drawing' is the definition.
(I've seen this before)
'old ode could have come' is the wordplay.
'old ode' can be anagrammed to 'DOODLE'.
Though, I am unsure how the anagram is indicated.
'from' is the link.
Can you help me to learn more?
(Other definitions for doodle that I've seen before include "Poem by Byron; king of Sicily" , "Absent-minded drawing" , "Aimless drawing" , "Scribble meaninglessly, fiddle with pen" , "Scribble about old ode" .)