A lot of pleasure supplied by peel of lemony fruit (6)
I believe the answer is:
lychee
'fruit' is the definition.
(I know that lychee is a fruit)
'a lot of pleasure supplied by peel of lemony' is the wordplay.
'a lot' becomes 'c'.
'of pleasure' becomes 'hee' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'supplied by' is a charade indicator (letters next to each other).
'peel of' suggests removing the centre (the outer letters or peel are used).
'lemony' with its middle taken out is 'ly'.
'c'+'hee'='chee'
'chee' after 'ly' is 'LYCHEE'.
Can you help me to learn more?
(Other definitions for lychee that I've seen before include "Popular Chinese fruit" , "Litchi" , "Oriental fruit" , "Rough-skinned fruit" , "Juicy Chinese fruit" .)