Boy at orchard's entrance for fruit (6)
I believe the answer is:
tomato
'fruit' is the definition.
(I've seen this before)
'boy at orchard's entrance' is the wordplay.
'boy' becomes 'tom' (**).
'entrance' indicates taking the first letters.
The first letter of 'orchard' is 'o'.
'tom'+'at'+'o'='TOMATO'
'for' acts as a link.
(Other definitions for tomato that I've seen before include "In France, it's a love apple" , "Red fruit eaten as veg" , "Salad plant" , "Fruit, often used as vegetable" , "A motto turned out to be fruit/veg" .)