Beg editor to withdraw material (5)
I believe the answer is:
suede
'material' is the definition.
(suede is a kind of material)
'beg editor to withdraw' is the wordplay.
'beg' becomes 'sue' (I can't explain this - if you can you should believe this answer much more).
'editor' becomes 'ed'.
'to withdraw' shows that the letters should be reversed in order.
'ed' back-to-front is 'de'.
'sue'+'de'='SUEDE'
Can you help me to learn more?
(Other definitions for suede that I've seen before include "unprepared material" , "Type of leather" , "Soft goatskin" , "Leather with flesh side rubbed to velvety nap" , "Leather with velvety nap used in shoes and clothes" .)