Fruit a mile away (4)
I believe the answer is:
lime
'fruit' is the definition.
(lime is a kind of fruit)
'a mile away' is the wordplay.
'away' indicates anagramming the letters.
'mile' anagrammed gives 'LIME'.
(Other definitions for lime that I've seen before include "Another name for the linden tree" , "Green fruit -- green colour" , "Having no money" , "Yellowish-green" , "Caustic calcium" .)