Popeye's favourite fruit (5)
I believe the answer is:
olive
'fruit' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for olive that I've seen before include "Fruit; Popeye's girlfriend" , "This branch is offered to show peace" , "Fruit also used to make oil" , "Stoned fruit" , "A Med. fruit" .)