Each maid peeled berry (4)
I believe the answer is:
acai
'berry' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'each maid peeled' is the wordplay.
'each' becomes 'ac' (I am not sure about this - if you are sure you should believe this answer much more).
'peeled' means to look at the middle letters (outer letters are peeled off).
The centre of 'maid' is 'ai'.
'ac'+'ai'='ACAI'
Can you help me to learn more?
(Other definitions for acai that I've seen before include "something nutritional to eat" , "South American food product" , "South American palm tree" , "fruit which is nutritious" .)