Roan moved to eat cold tree fruit (5)
I believe the answer is:
acorn
'tree fruit' is the definition.
'acorn' can be an answer for 'fruit' (acorn is a kind of fruit). I'm not sure about the 'tree' bit.
'roan moved to eat cold' is the wordplay.
'moved' indicates an anagram.
'to eat' is an insertion indicator.
'cold' becomes 'c' (eg on taps).
'roan' anagrammed gives 'aorn'.
'aorn' going around 'c' is 'ACORN'.
Can you help me to learn more?
(Other definitions for acorn that I've seen before include "Baby oak?" , "From which a tall tree may grow" , "Fruit-seed of the oak" , "Might source" , "old computer?" .)