Intertwined with material benefit (5)
I believe the answer is:
woven
'intertwined' is the definition.
(thesaurus)
'with material benefit' is the wordplay.
'with' becomes 'w' (abbreviation).
'material benefit' becomes 'oven' (I can't justify this - if you can you should give a lot more credence to this answer).
'w'+'oven'='WOVEN'
Can you help me to learn more?
(Other definitions for woven that I've seen before include "created by Bottom?" , "Integrally included" , "Like the Web" , "Braided" , "Made by interlacing threads or strips of material" .)