Small change in old cartoon strip? (7)
I believe the answer is:
peanuts
'cartoon strip?' is the definition.
(cartoon strip featuring Charlie Brown)
'small change in old' is the wordplay.
'small' becomes 'peanut' (synonyms).
'change in old' becomes 's' (I can't explain this - if you can you should give a lot more credence to this answer).
'peanut'+'s'='PEANUTS'
Can you help me to learn more?
(Other definitions for peanuts that I've seen before include "Paltry sum of money" , "what could make up a packet?" , "A derisory amount of money" , "Schulz comic strip" , "Chickenfeed" .)