Juicy fruits (6)
I believe the answer is:
melons
'juicy fruits' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for melons that I've seen before include "Lemons make other fruits" , "Lemons turn out to be other fruits" , "Juicy fruit" , "Fruits with hard rinds" , "Juicy fruits" .)