Fruit eaten when out of melon? (5)
I believe the answer is:
lemon
'fruit eaten when out of melon?' is the definition.
'lemon' can be an answer for 'fruit' (I've seen this in another clue). I'm not certain of the 'eaten when out of melon?' bit.
'of melon?' is the wordplay.
'of' indicates an anagram (the answer comes from or 'of' the letters).
'melon' with letters rearranged gives 'LEMON'.
Can you help me to learn more?
(Other definitions for lemon that I've seen before include "Yellow citrus fruit with acid taste" , "Leaving body" , "Pulsate" , "Fruit - as an answer it's unsatisfactory" , "Sharp-tasting fruit" .)