Comic or cartoon's last appearance at the back of company newspapers (8)
I believe the answer is:
comedian
'comic' is the definition.
(synonyms)
'cartoon's last appearance at the back of company newspapers' is the wordplay.
'last appearance' indicates one should take the final letters (the letter that appears last in the word).
'at the back of' says to put letters next to each other.
'company' becomes 'co' (abbreviation).
'newspapers' becomes 'media' (I can't justify this - if you can you should give a lot more credence to this answer).
The last letter of 'cartoon' is 'n'.
'co'+'media'='comedia'
'n' after 'comedia' is 'COMEDIAN'.
'or' acts as a link.
Can you help me to learn more?
(Other definitions for comedian that I've seen before include "Humorist" , "Stand-up" , "Demoniac (anag.)" , "Joker" , "Demoniac sort of funny man" .)