Hugo and Clio both peeled fruit (4)
I believe the answer is:
ugli
'fruit' is the definition.
(I know that Ugli is a fruit)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ugli that I've seen before include "so to speak, for > fruit" , "Unattractive-sounding fruit?" , "Mottled tangelo hybrid" , "Black/violet element" , "Citrus fruit of the West Indies" .)