Nut - like to eat shells (6)
I believe the answer is:
cashew
'nut' is the definition.
(cashew is a kind of nut)
'like to eat shells' is the wordplay.
'like' becomes 'as'.
'to eat' means one lot of letters goes inside another (word on the right has word on the left to eat).
'shells' becomes 'chew' (I can't explain this - if you can you should believe this answer much more).
'as' put inside 'chew' is 'CASHEW'.
Can you help me to learn more?
(Other definitions for cashew that I've seen before include "Edible nut" , "Kidney shaped nut" , "Acajou" , "Common type of nut" , "Kind of nut" .)