Favour penning a couple of lines for part of cartoon (7)
I believe the answer is:
balloon
'part of cartoon' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'favour penning a couple of lines' is the wordplay.
'favour' becomes 'boon' (I've seen this before).
'penning' means one lot of letters goes inside another.
'couple of lines' becomes 'll' (two abbreviations for line).
'a'+'ll'='all'
'boon' enclosing 'all' is 'BALLOON'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for balloon that I've seen before include "Air transport" , "Inflatable thin rubber ball" , "Air-filled bag" , "plaything" , "Bag filled with gas or air" .)